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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. using ll = long long;
  4.  
  5. int main() {
  6.     ios::sync_with_stdio(false);
  7.     cin.tie(nullptr);
  8.     int T; cin >> T;
  9.     while (T--) {
  10.        int n;
  11.        cin>>n;
  12.        string s;
  13.        cin>>s;
  14.        int count=0,a=0;
  15.        for(int i=0;i<n;i++){
  16.        	if(s[i]=='0'){
  17.        		count++;
  18.        		a=max(count,a);
  19.        	}
  20.        	else count=0;
  21.        }
  22.        if(s[0]=='0') {
  23.        	count++;
  24.        	a=max(count,a);
  25.        }
  26.        cout<<a<<endl;
  27.     }
  28.     return 0;
  29. }
  30.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin 
5
1
1
3
101
4
0110
11
10101010100
2
11
stdout 
0
1
2
2
0
https://ideone.com/f4Po8D
language:
C++ (gcc 8.3)
created:
10 hours ago
visibility:
public

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