import java.util.*; class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); int m = sc.nextInt(); int[] kya = new int[n]; for(int i=0;i0&&ans=kya[ans]){ans++; m-=kya[ans-1]; }else break; } System.out.println(ans); } }