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