Codeforces 701A A. Cards (water problem)

Topic Links:

A. Cards

Test instructions

Ask two numbers and the same, how to combine;

AC Code:

#include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #include < cmath> #include <bits/stdc++.h> #include <stack>using namespace std; #define for (i,j,n) for (int i=j;i< =n;i++) #define MST (SS,B) memset (ss,b,sizeof (ss)); typedef long LONG ll;template<class t> void Read (T&num) {C Har CH;    BOOL F=false; For (Ch=getchar (); ch< ' 0 ' | | Ch> ' 9 ';    f= ch== '-', Ch=getchar ()); for (num=0;    ch>= ' 0 ' &&ch<= ' 9 '; num=num*10+ch-' 0 ', Ch=getchar ()); F && (num=-num);}    int stk[70], tp;template<class t> inline void print (T p) {if (!p) {puts ("0"); return;}    while (p) stk[++ TP] = p%10, p/=10;    while (TP) Putchar (stk[tp--] + ' 0 '); Putchar (' \ n ');} Const LL Mod=1e9+7;const double Pi=acos ( -1.0); const int INF=1E9;CONST int N=1e5+10;const int Maxn=500+10;const double eps=        1e-6;int N,a[200],vis[200];int Main () {int n;        Read (n);        int sum=0;        for (i,1,n) read (A[i]), sum+=a[i]; INT le=2*sum/n;            for (I,1,n) {if (vis[i]) continue;                    for (J,1,n) {if (!vis[j]&&a[i]+a[j]==le&&i!=j) {                    cout<<i<< "" <<j<<endl;                    Vis[i]=1;                    Vis[j]=1;                Break }}} return 0;}

　　

Codeforces 701A A. Cards (water problem)