[POJ1236] Network of schools (and +floyd, pseudo strong connected Component)
Last Update:2016-05-17
Source: Internet
Author: User
<span id="Label3"></p><p><p>Title Link: http://poj.org/problem?id=1236</p></p><p><p>This problem is originally a strong connectivity component board problem, but weak long not write Tarjan so unfamiliar, and see this data range feel shrinking point this thing can use the distance between point to judge do not know the group of the giant magnetic magnet ... Below the weak on everyone to get a how to use Floyd and check set to shrink point ... The general idea is to Floyd run out all the distance, then O (n^2) find 22 can reach the point of their relationship with and check set to Maintain. Next o (n) find and look up the representative elements in the Set. This time should be a special sentence when the connecting block is 1. Then o (n^2) to find all the one-way edges, and then update all the representation of the elements of the degree of access, It's done ... It's finished ... The data is too water so weak Floyd ran over, and later can not be so speculative qaq</p></p><p><p></p></p><pre><span style="color: #008080;"><span style="color: #008080;">1</span></span> <span style="color: #008000;"><span style="color: #008000;">/*</span></span><span style="color: #008080;"><span style="color: #008080;">2</span></span> <span style="color: #008000;"><span style="color: #008000;">━━━━━┒ギリギリ♂eye! </span></span><span style="color: #008080;"><span style="color: #008080;">3</span></span> <span style="color: #008000;"><span style="color: #008000;">┓┏┓┏┓┃キリキリ♂mind! </span></span><span style="color: #008080;"><span style="color: #008080;">4</span></span> <span style="color: #008000;"><span style="color: #008000;">┛┗┛┗┛┃\0/</span></span><span style="color: #008080;"><span style="color: #008080;">5</span></span> <span style="color: #008000;"><span style="color: #008000;">┓┏┓┏┓┃/</span></span><span style="color: #008080;"><span style="color: #008080;">6</span></span> <span style="color: #008000;"><span style="color: #008000;">┛┗┛┗┛┃ノ)</span></span><span style="color: #008080;"><span style="color: #008080;">7</span></span> <span style="color: #008000;"><span style="color: #008000;">┓┏┓┏┓┃</span></span><span style="color: #008080;"><span style="color: #008080;">8</span></span> <span style="color: #008000;"><span style="color: #008000;">┛┗┛┗┛┃</span></span><span style="color: #008080;"><span style="color: #008080;">9</span></span> <span style="color: #008000;"><span style="color: #008000;">┓┏┓┏┓┃</span></span><span style="color: #008080;"><span style="color: #008080;">Ten</span></span> <span style="color: #008000;"><span style="color: #008000;">┛┗┛┗┛┃</span></span><span style="color: #008080;"><span style="color: #008080;"></span> one</span> <span style="color: #008000;"><span style="color: #008000;">┓┏┓┏┓┃</span></span><span style="color: #008080;"><span style="color: #008080;"></span> a</span> <span style="color: #008000;"><span style="color: #008000;">┛┗┛┗┛┃</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008000;"><span style="color: #008000;">┓┏┓┏┓┃</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008000;"><span style="color: #008000;">┃┃┃┃┃┃</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #008000;"><span style="color: #008000;">┻┻┻┻┻┻</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008000;"><span style="color: #008000;">*/</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>#include <algorithm><span style="color: #008080;"><span style="color: #008080;"></span> -</span>#include <iostream><span style="color: #008080;"><span style="color: #008080;"></span> +</span>#include <iomanip><span style="color: #008080;"><span style="color: #008080;"></span> -</span>#include <cstring><span style="color: #008080;"><span style="color: #008080;"></span> +</span>#include <climits><span style="color: #008080;"><span style="color: #008080;"></span> a</span>#include <complex><span style="color: #008080;"><span style="color: #008080;"></span> at</span>#include <fstream><span style="color: #008080;"><span style="color: #008080;"></span> -</span>#include <cassert><span style="color: #008080;"><span style="color: #008080;"></span> -</span>#include <cstdio><span style="color: #008080;"><span style="color: #008080;"></span> -</span>#include <bitset><span style="color: #008080;"><span style="color: #008080;"></span> -</span>#include <vector><span style="color: #008080;"><span style="color: #008080;"></span> -</span>#include <deque><span style="color: #008080;"><span style="color: #008080;"></span> in</span>#include <queue><span style="color: #008080;"><span style="color: #008080;"></span> -</span>#include <stack><span style="color: #008080;"><span style="color: #008080;"></span> to</span>#include <ctime><span style="color: #008080;"><span style="color: #008080;"></span> +</span>#include <<span style="color: #0000ff;"><span style="color: #0000ff;">Set</span></span>><span style="color: #008080;"><span style="color: #008080;"></span> -</span>#include <map><span style="color: #008080;"><span style="color: #008080;"></span> the</span>#include <cmath><span style="color: #008080;"><span style="color: #008080;"></span> *</span> <span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #0000ff;"><span style="color: #0000ff;">using</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">namespace</span></span><span style="color: #000000;"><span style="color: #000000;">std;</span></span><span style="color: #008080;"><span style="color: #008080;">Panax Notoginseng</span></span> <span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>Fr First<span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>SC Second<span style="color: #008080;"><span style="color: #008080;"></span> +</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>CL Clear<span style="color: #008080;"><span style="color: #008080;"></span> a</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>W (a) while (a--)<span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>PB (a) push_back (a)<span style="color: #008080;"><span style="color: #008080;"></span> +</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>Rint (a) scanf ("%d", &a)<span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>Rll (a) scanf ("%i64d", &a)<span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>Rs (a) scanf ("%s", a)<span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>FRead () freopen ("in", "r", Stdin)<span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>FWrite () freopen ("out", "w", Stdout)<span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>Rep (i, len) for (int i = 0; i < (len); i++)<span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>For (i, a, len) for (int i = (a); i < (len); i++)<span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>Cls (a) memset ((a), 0, sizeof (a))<span style="color: #008080;"><span style="color: #008080;">Wuyi</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>CLR (a, x) memset ((a), (x), sizeof (a))<span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">#define</span></span>Full (a) memset ((a), 0x7f7f, sizeof (a))<span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #008080;"><span style="color: #008080;"></span> wu</span> <span style="color: #0000ff;"><span style="color: #0000ff;">Const</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>INF =<span style="color: #800080;"><span style="color: #800080;">0x7f7f7f</span></span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">Const</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>MAXN =<span style="color: #800080;"><span style="color: #800080;">111</span></span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> about</span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">n, m;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">inch</span></span>[maxn],<span style="color: #0000ff;"><span style="color: #0000ff;"></span> out</span><span style="color: #000000;"><span style="color: #000000;">[maxn];</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">dp[maxn][maxn];</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">pos[maxn], cnt;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">pre[maxn];</span></span><span style="color: #008080;"><span style="color: #008080;"></span> a</span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">belong[maxn];</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span> <span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>Find<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">X) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">return</span></span>x = = pre[x]? x:pre[x] =<span style="color: #000000;"><span style="color: #000000;">Find (pre[x]);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> $</span> <span style="color: #000000;"><span style="color: #000000;">}</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">void</span></span>Unite<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>X<span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">Y) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>x =<span style="color: #000000;"><span style="color: #000000;">Find (x);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>y =<span style="color: #000000;"><span style="color: #000000;">Find (y);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(x! = Y) pre[x] =<span style="color: #000000;"><span style="color: #000000;">y;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> in</span> <span style="color: #000000;"><span style="color: #000000;">}</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">main () {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> about</span> <span style="color: #008000;"><span style="color: #008000;">//</span></span><span style="color: #008000;"><span style="color: #008000;">FRead ();</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span><span style="color: #000000;"><span style="color: #000000;">v;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> while</span>(~<span style="color: #000000;"><span style="color: #000000;">Rint (N)) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>Cls (<span style="color: #0000ff;"><span style="color: #0000ff;">inch</span></span>); Cls (<span style="color: #0000ff;"><span style="color: #0000ff;"></span> out</span><span style="color: #000000;"><span style="color: #000000;">);</span></span><span style="color: #008080;"><span style="color: #008080;"></span> +</span>For (i,<span style="color: #800080;"><span style="color: #800080;">1</span></span>, n+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>pre[i] =<span style="color: #000000;"><span style="color: #000000;">i;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>For (j,<span style="color: #800080;"><span style="color: #800080;">1</span></span>, n+<span style="color: #800080;"><span style="color: #800080;">1</span></span>) dp[i][j] =<span style="color: #000000;"><span style="color: #000000;">inf;</span></span><span style="color: #008080;"><span style="color: #008080;">Bayi</span></span>dp[i][i] =<span style="color: #800080;"><span style="color: #800080;">0</span></span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>For (u,<span style="color: #800080;"><span style="color: #800080;">1</span></span>, n+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> while</span><span style="color: #000000;"><span style="color: #000000;">(Rint (v)) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(v = =<span style="color: #800080;"><span style="color: #800080;">0</span></span>)<span style="color: #0000ff;"><span style="color: #0000ff;"></span> break</span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>dp[u][v] =<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>For (k,<span style="color: #800080;"><span style="color: #800080;">1</span></span>, n+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">)</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span>For (i,<span style="color: #800080;"><span style="color: #800080;">1</span></span>, n+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">)</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>For (j,<span style="color: #800080;"><span style="color: #800080;">1</span></span>, n+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">)</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(dp[i][j] > dp[i][k] +<span style="color: #000000;"><span style="color: #000000;">Dp[k][j])</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>dp[i][j] = dp[i][k] +<span style="color: #000000;"><span style="color: #000000;">dp[k][j];</span></span><span style="color: #008080;"><span style="color: #008080;">94</span></span>For (i,<span style="color: #800080;"><span style="color: #800080;">1</span></span>, n+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>For (j, i+<span style="color: #800080;"><span style="color: #800080;">1</span></span>, n+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(dp[i][j]! = inf && dp[j][i]! =<span style="color: #000000;"><span style="color: #000000;">Inf) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;">Unite (i, j);</span></span><span style="color: #008080;"><span style="color: #008080;">98</span></span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> about</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;">101</span></span>For (i,<span style="color: #800080;"><span style="color: #800080;">1</span></span>, n+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">) {</span></span><span style="color: #008080;"><span style="color: #008080;">102</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>FA =<span style="color: #000000;"><span style="color: #000000;">Find (i);</span></span><span style="color: #008080;"><span style="color: #008080;">103</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(i = = Fa) pos[cnt++] =<span style="color: #000000;"><span style="color: #000000;">i;</span></span><span style="color: #008080;"><span style="color: #008080;">104</span></span>belong[i] =<span style="color: #000000;"><span style="color: #000000;">fa;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;">106</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(cnt = =<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">) {</span></span><span style="color: #008080;"><span style="color: #008080;">107</span></span>printf<span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #800000;"><span style="color: #800000;">1\n0\n</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">);</span></span><span style="color: #008080;"><span style="color: #008080;">108</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">Continue</span></span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;">109</span></span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span>For (i,<span style="color: #800080;"><span style="color: #800080;">1</span></span>, n+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">) {</span></span><span style="color: #008080;"><span style="color: #008080;">111</span></span>For (j,<span style="color: #800080;"><span style="color: #800080;">1</span></span>, n+<span style="color: #800080;"><span style="color: #800080;">1</span></span><span style="color: #000000;"><span style="color: #000000;">) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(i = = J)<span style="color: #0000ff;"><span style="color: #0000ff;">Continue</span></span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;">113</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(belong[i]! = belong[j] && dp[j][i] = = inf && dp[i][j]! =<span style="color: #000000;"><span style="color: #000000;">Inf) {</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;">inch</span></span>[belong[i]]++<span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #0000ff;"><span style="color: #0000ff;"></span> out</span>[belong[j]]++<span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;">117</span></span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;">118</span></span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;">119</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">int</span></span>ANS1 =<span style="color: #800080;"><span style="color: #800080;">0</span></span>, Ans2 =<span style="color: #800080;"><span style="color: #800080;">0</span></span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;"></span> -</span> <span style="color: #000000;"><span style="color: #000000;">Rep (i, Cnt) {</span></span><span style="color: #008080;"><span style="color: #008080;">121</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(!<span style="color: #0000ff;"><span style="color: #0000ff;"></span> out</span>[pos[i]]) ans1++<span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;">122</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">if</span></span>(!<span style="color: #0000ff;"><span style="color: #0000ff;">inch</span></span>[pos[i]]) ans2++<span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;">123</span></span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;">124</span></span>printf<span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #800000;"><span style="color: #800000;">%d\n%d\n</span></span><span style="color: #800000;"><span style="color: #800000;">"</span></span><span style="color: #000000;"><span style="color: #000000;">, ans1, Max (ans1, ans2));</span></span><span style="color: #008080;"><span style="color: #008080;"></span> the</span> <span style="color: #000000;"><span style="color: #000000;"> }</span></span><span style="color: #008080;"><span style="color: #008080;">126</span></span> <span style="color: #0000ff;"><span style="color: #0000ff;">return</span></span> <span style="color: #800080;"><span style="color: #800080;">0</span></span><span style="color: #000000;"><span style="color: #000000;">;</span></span><span style="color: #008080;"><span style="color: #008080;">127</span></span>}</pre><p><p></p></p><p><p>[POJ1236] Network of schools (and +floyd, pseudo strong connected Component)</p></p></span>
