func_code_string: #include <bits/stdc++.h>   using namespace std;   int size_n, size_m;   set<int> result;   vector<char> marks(0);   vector<string> mrk(0);   int main() {     int ii, jj;     string str;     cin >> size_n >> size_m;     marks.resize(size_m);     mrk.resize(size_n);     cin.ignore();     for (ii = 0; ii < size_m; ii++) marks[ii] =  n ;     for (ii = 0; ii < size_n; ii++) {       getline(cin, str);       mrk[ii] = str;       for (jj = 0; jj < size_m; jj++) {         if ((marks[jj] ==  n ) || (str[jj] >= marks[jj])) marks[jj] = str[jj];       }     }     for (ii = 0; ii < size_m; ii++) {       for (jj = 0; jj < size_n; jj++) {         if (mrk[jj][ii] == marks[ii]) result.insert(jj);       }     }     cout << result.size() << endl;     return 0;   }   