//import java.io.FileNotFoundException;
//import java.util.Scanner;



class server{
	static Scanner in=new Scanner(System.in);
	public static void main(String[] args) {
		
	    int n = in.nextInt();
		int s=0;
		int t=in.nextInt();
		for(int i=0;i<n;i++){
			int a = in.nextInt();
			if(s+a>t){
				System.out.println(i);
				return;
			}
			s=s+a;
		}
		System.out.println(n);
		
	}
}