#include <iostream>
#include <cstring>
#include <algorithm>
using namespace std;
int n,sum,ans;
int main()
{
    scanf("%d%d", &n, &sum);
    while(n--)
    {
        int a;
        cin>>a;
        sum-=a;
        if(sum>=0) ans++;
    }
    cout<<ans;
    return 0;
}