Codeforces Beta Round #12 (Div 2 Only)

http://codeforces.com/contest/12

A

水题

 1 #include<bits/stdc++.h>
 2 using namespace std;
 3 #define lson l,mid,rt<<1
 4 #define rson mid+1,r,rt<<1|1
 5 #define sqr(x) ((x)*(x))
 6 #define maxn 1000010
 7 typedef long long ll;
 8 /*#ifndef ONLINE_JUDGE
 9         freopen("1.txt","r",stdin);
10 #endif */
11 
12 string str[5];
13 
14 int main(){
15     #ifndef ONLINE_JUDGE
16         freopen("1.txt","r",stdin);
17     #endif
18     for(int i=0;i<3;i++){
19         cin>>str[i];
20     }
21     for(int i=0;i<3;i++){
22         for(int j=0;j<3;j++){
23             if(str[i][j]!=str[2-i][2-j]){
24                 cout<<"NO"<<endl;
25                 return 0;
26             }
27         }
28     }
29     cout<<"YES"<<endl;
30 
31 
32     return 0;
33 }

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