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22 lines
337 B
C++
22 lines
337 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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