func_code_string: #include <bits/stdc++.h>   using namespace std;   const int oo = (int)1e9;   const double PI = 2 * acos(0.0);   const double eps = 1e-7;   int dx[] = {1, -1, 0, 0};   int dy[] = {0, 0, 1, -1};   int main() {     int n, m;     cin >> n >> m;     string s;     int mx = 0;     int c = 0;     for (int i = 0; i < m; i++) {       cin >> s;       int va = 0;       for (int l = 0; l < ((int)((s).size())); l++)         if (s[l] ==  0 ) {           c++;           va = 1;           break;         }       if (va == 0) {         mx = max(mx, c);         c = 0;       }     }     cout << max(mx, c) << endl;   }   