func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     char a[n][7];     for (int i = 0; i < n; i++) {       for (int j = 0; j < 7; j++) cin >> a[i][j];     }     int ans = 0, ct = 0;     for (int j = 0; j < 7; j++) {       ct = 0;       for (int i = 0; i < n; i++) {         if (a[i][j] ==  1 ) ct++;       }       ans = max(ans, ct);     }     cout << ans;     return 0;   }   