Codeforces Round #171 (Div. 2) 279B - Books Solution

Problem Link:  https://codeforces.com/contest/279/problem/B  

Solution in C++:

///La ilaha illellahu muhammadur rasulullah

///******Bismillahir-Rahmanir-Rahim******///

///Abul Hasnat  Tonmoy

///Department of CSE,23rd batch

///Islamic University,Bangladesh

///**********ALLAH IS ALMIGHTY************///

#include <bits/stdc++.h>

using namespace std;

int main()

{

    long long  n,t,i,j=0,s=0,c=0;

    cin>>n>>t;

    long long a[n+9];

    for(i=0; i<n; i++)

    {

        cin>>a[i];

    }

    for(i=0; i<n; i++)

    {

        s+=a[i];

        if(s<=t)

            c++;

        else

        {

            s-=a[j];

            j++;

        }

    }

    cout<<c<<endl;

}