import java.util.Scanner;

public class Main{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int x = sc.nextInt();
		int dsum = 0, d = 0, i = 0;
		int s[] = new int[n];
		for (int j = 0; j < s.length; j++)
			s[j] = sc.nextInt();
		while (i <= n) {
			if(i>0)d = dsum + s[i-1];
			else d=0;
			if (d > x)
				break;
			else {
				dsum = d;
				i++;
			}
		}
		System.out.println(i);
	}
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz