import java.util.*;
import java.io.*; //comment out when submitting

public class l {
  Scanner in = new Scanner(System.in);
  // static Scanner in = null;

  public static void main(String[] args) {
    // //comment out this part
    // try {
    //   File file = new File("input.txt");
    //   in = new Scanner(file);
    // } catch(FileNotFoundException e) {
    //   System.out.println("error");
    // }

    new l().go();
  }

  private void go() {
    //read the input
    int n = in.nextInt();
    int t = in.nextInt();
    int[] time = new int[n];
    for(int i = 0; i < n; i++) {
      time[i] = in.nextInt();
    }

    int count = 0;
    for(int i = 0; i < n; i ++) {
      t = t - time[i];
      if (t < 0) {
        break;
      }
      else {
        count += 1;
      }
    }

    System.out.println(count);
  }
}