Submission #1137169

---

Source Code Expand

#include<bits/stdc++.h>
#define range(i,a,b) for(int i = (a); i < (b); i++)
#define rep(i,b) for(int i = 0; i < (b); i++)
#define all(a) (a).begin(), (a).end()
#define show(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;
const int INF = 2000000000;
using namespace std;

int main(){
    int n;
    string s;
    cin >> n >> s;

    int cnt = 0;
    rep(i,s.size() - 2){
       if(s.substr(i,3) == "XXX"){
           s[i + 2] = '.';
           cnt++;
       }
    }
    cout << cnt << endl;
}

Submission Info

Judge Result