func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, m;   string s[55];   vector<int> getRow(int x) {     vector<int> R;     for (int i = 1; i <= m; i++)       if (s[x][i] ==  # ) R.push_back(i);     return R;   }   vector<int> getCol(int x) {     vector<int> C;     for (int i = 1; i <= n; i++)       if (s[i][x] ==  # ) C.push_back(i);     return C;   }   int Viz[55];   int main() {     cin >> n >> m;     for (int i = 1; i <= n; i++) {       string t;       cin >> t;       s[i] =  .  + t +  . ;     }     int nope = 0;     for (int i = 1; i <= n && !nope; i++) {       if (!Viz[i]) {         vector<int> V, R;         int ok = 0;         for (int j = 1; j <= m; j++) {           if (s[i][j] ==  # ) {             R.push_back(j);             if (!ok)               V = getCol(j), ok = 1;             else {               vector<int> U = getCol(j);               if (U != V) nope = 1;             }           }         }         for (int j : V) {           Viz[j] = 1;           vector<int> Row = getRow(j);           if (R != Row) {             nope = 1;           }         }       }     }     if (nope)       cout <<  No ;     else       cout <<  Yes ;     return 0;   }   