func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     string s;     vector<vector<int> > v(n, vector<int>(7, 0));     for (int i = 0; i < n; i++) {       cin >> s;       for (int j = 0; j < 7; j++) v[i][j] = s[j] -  0 ;     }     vector<int> cnt(7, 0);     for (int i = 0; i < 7; i++) {       for (int j = 0; j < n; j++) cnt[i] += v[j][i];     }     int m = 0;     for (int i = 0; i < 7; i++) {       if (cnt[i] > m) m = cnt[i];     }     cout << m;     return 0;   }   