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OI-codes/problem/CF12A/CF12A.cpp
2020-10-22 21:03:21 +08:00

22 lines
334 B
C++

#include<bits/stdc++.h>
using namespace std;
int main() {
string s, t;
cin >> t;
s += t;
cin >> t;
s += t;
cin >> t;
s += t;
for(int i = 0 ; i < 9 ; i++) {
if(s[i] != s[8-i]) {
cout << "NO" << endl;
return 0;
}
}
cout << "YES" << endl;
return 0;
}