# Codeforces Round #296 (Div. 2)

Source: Internet
Author: User
Tags cmath

A

Test instructions: Give a piece of paper with a width of B, each time with a short edge as the side length of the square, ask how many squares can be obtained

First, divide directly into a/b, and then use a%b,b as the length and width of the new paper, to do the same thing.

When you do it = = the process of simulating division (with subtraction = =) To find out time-outs, and then a special sentence if a/b>10000 alone processing = = It was actually over.

= = Tle---tle---tle------

`1#include <iostream>2#include <cstdio>3#include <cstring>4#include <cmath>5#include <stack>6#include <vector>7#include <map>8#include <queue>9#include <algorithm>Ten #definemod=1e9+7; One using namespacestd; A  -typedefLong LongLL; -  the intMain () { -LL a,b,ans=0; -Cin>>a>>b; -      while(1){ +         if(a<b) Swap ( A, a); -         if(b==0) Break;  +ans+=a/b; ALL tmp=a%b; atA=b; -b=tmp; -     } -cout<<ans<<"\ n"; -     return 0;  -}`
View Code

B

Test instructions: Gives two identical string s,t, defines the number of characters at the corresponding position of two strings, asks the minimum distance that can be obtained by one exchange, and outputs the position of the interchange

DP[A][B], respectively, will be in the same position, S[i] and T[i] different positions recorded down,

If DP[A][B] and dp[b][a] are present, then after the swap, just match, the maximum distance minus 2 if only dp[a][b] exists, then the maximum distance minus 1

Say this question, oneself do time is a little train of thought have no, study this question well =

`1#include <iostream>2#include <cstdio>3#include <cstring>4#include <cmath>5#include <stack>6#include <vector>7#include <map>8#include <queue>9#include <algorithm>Ten #definemod=1e9+7; One using namespacestd; A  -typedefLong LongLL; - Const intmaxn=200005; the CharS[MAXN],T[MAXN]; - intdp[ the][ the]; - intHAS[MAXN]; -  + intMain () { -     inti,j,n,ans=0; +scanf"%d",&n); ACin>> (s+1) >> (t+1); at      for(i=1; i<=n;i++){ -         if(s[i]!=T[i]) { -dp[s[i]-'a'][t[i]-'a']=i; -has[s[i]-'a']=i;  -ans++;  -         } in     } -      to      for(i=0;i< -; i++){ +          for(j=0;j< -; j + +){ -             if(dp[i][j]!=0&&dp[j][i]!=0){ theprintf"%d\n", ans-2); *printf"%d%d\n", Dp[i][j],dp[j][i]); \$                 return 0;Panax Notoginseng             } -         } the     } +      A      for(i=0;i< -; i++){ the          for(j=0;j< -; j + +){ +             if(dp[i][j]!=0&&has[j]!=0){ -printf"%d\n", ans-1); \$printf"%d%d\n", Dp[i][j],has[j]); \$                 return 0; -             } -         } the     } -     Wuyiprintf"%d\n", ans); theprintf"-1-1\n"); -     return 0;  Wu}`
View Code

C

Test instructions: Given the length of W, width of h glass, now cut n knives, ask each cut, the largest glass fragments of the area

Because each time a knife down, the current interval will be divided into 2 parts, so in order to make the largest area, from the current horizontal range of the largest selection of the longest, from the current vertical range to take the largest width

`1#include <iostream>2#include <cstdio>3#include <cstring>4#include <cmath>5#include <stack>6#include <vector>7#include <map>8#include <queue>9#include <Set>Ten#include <algorithm> One #definemod=1e9+7; A using namespacestd; -  -typedefLong LongLL; themultiset<int>HH,VV; - Set<int>ph,qv; - Set<int>:: iterator r,l; -  + intMain () { -     CharC; +     intX,w,h,n; Ascanf"%d%d%d",&w,&h,&n); GetChar (); atPh.insert (0);p H.insert (h); -Qv.insert (0); Qv.insert (w); - Hh.insert (h); Vv.insert (w); -      -      while(n--){ -scanf"%c%d",&c,&x); GetChar (); in          -         if(c = ='H') to         { +L =ph.lower_bound (x); -R = l; l--; the Ph.insert (x); *Hh.insert (X (*l)); \$Hh.insert ((*r)-x);Panax NotoginsengHh.erase (Hh.find (*R)-(*l))); -         } the         Else +         { AL =qv.lower_bound (x); theR = l; l--; + Qv.insert (x); -Vv.insert (X-(*l)); \$Vv.insert ((*r)-x); \$Vv.erase (Vv.find (*R)-(*l))); -         } -  theprintf"%i64d\n", (Long Long) (*hh.rbegin ()) * (*Vv.rbegin ())); -         Wuyi          the     }     -     return 0;  Wu}`
View Code

Write with the array, timed out, and then see the puzzle, with the STL inside things, is really not familiar with too unfamiliar

Go---go---go----

Codeforces Round #296 (Div. 2)

Related Keywords:

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

## A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

• #### Sales Support

1 on 1 presale consultation

• #### After-Sales Support

24/7 Technical Support 6 Free Tickets per Quarter Faster Response

• Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.