func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       vector<string> v(n);       for (auto& i : v) cin >> i;       bool state = true;       for (int i = n - 2; i >= 0; i--) {         for (int j = n - 2; j >= 0; --j) {           if (v[i][j] ==  1  && v[i + 1][j] ==  0  && v[i][j + 1] ==  0 )             state = false;         }       }       if (state)         cout <<  Yes  <<   n ;       else         cout <<  No  <<   n ;     }   }   