import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int nn = sc.nextInt();
		int xx = sc.nextInt();
		int[] ll = new int[nn];
		long res = 0;
		int i=0;
		
		for (i=0;i<nn;i++){
			ll[i] = sc.nextInt();
		}
		
		for (i=0;i<nn;i++){
			res += ll[i];
			if(res >xx){
				break;
			}
		}
		
		System.out.print(i+1);
	}
}
/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