Codeforces 978B. File Name Solution

Solve in C++:

//AH Tonmoy
//Department of CSE ,Islamic University

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,x=0,i,j;
    char s[1000];
    while(cin>>n)
    {
        for(j=0; j<n; j++)
        {
            cin>>s[j];
        }
        for(i=0; i<n; i++)
        {
            if(((s[i]=='x')&&(s[i+1]=='x'))&&(s[i+2]=='x'))
            {

                x++;

            }
        }

        if(x>0)
            cout<<x<<endl;
        else
            cout<<"0"<<endl;
        x=0;
    }

}


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