func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     vector<string> V;     for (int i = 0; i < 4; ++i) {       string s;       cin >> s;       V.push_back(s);     }     bool pos = false;     for (int r = 0; r < 3; ++r) {       for (int c = 0; c < 3; ++c) {         int dots = 0, nums = 0;         dots += (V[r][c] ==  . );         nums += (V[r][c] !=  . );         dots += (V[r][c + 1] ==  . );         nums += (V[r][c + 1] !=  . );         dots += (V[r + 1][c] ==  . );         nums += (V[r + 1][c] !=  . );         dots += (V[r + 1][c + 1] ==  . );         nums += (V[r + 1][c + 1] !=  . );         if (dots >= 3 || nums >= 3) pos = true;       }     }     cout << (pos ?  YES  :  NO );     return 0;   }   