func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     map<int, bool> ma;     char ch[100][100];     int n, m, answer = 0;     cin >> n >> m;     for (int i = 0; i < n; ++i)       for (int j = 0; j < m; cin >> ch[i][j++])         ;     for (int i = 0; i < m; ++i) {       char Max = NULL;       for (int j = 0; j < n; Max = max(Max, ch[j++][i]))         ;       for (int j = 0; j < n; ++j)         if (ch[j][i] == Max && !ma[j]) {           ++answer;           ma[j] = true;         }     }     cout << answer << endl;     return 0;   }   