Ideone.com

fork download

#include<iostream>
using namespace std;
 
int main() {
    int t;
    cin >> t;
    while (t--) {
        string a, b, c;
        cin >> a >> b >> c;
        bool possible = true;
        for (int i = 0; i < a.length(); ++i) {
            if (c[i] != a[i] && c[i] != b[i]) {
                possible = false;
                break;
            }
        }
        if (possible) {
            cout << "YES" << "\n";
        } else {
            cout << "NO" << "\n";
        }
    }
    return 0;
}

Success #stdin #stdout 0.01s 5284KB

stdin

Standard input is empty

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