#include <bits/stdc++.h>
using namespace std;


int main() {
long long a,b,sum=0,c;
cin>>a>>b;
int count=0;
for (int i = 0; i < a; ++i) {
	cin>>c;
	if(b<sum+c){
		cout<<count<<endl;
		return 0;
	}else{
		sum=sum+c;
		count++;
	}
}
cout<<count<<endl;
}