Bowl.java

import java.util.*;

class Bowl {

	static int getModifiedBowl(int[] marbles) {
		for (int i = marbles.length - 1; i >= 0; i--) {
			if (marbles[i] < 9) {

				// This one is not required here, but in online compiler it might ask to modify the original array
				// sent to the funtion
				if (i != marbles.length-1) {
					marbles[i+1] = 0;
				} 
				
				return i+1;
			}
		}
		return 0;
	}
	
	public static void main(String args[]) {
		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();
		int[] marbles = new int[N];

		for (int i = 0; i < N; i++) {
			marbles[i] = sc.nextInt();
		}

		System.out.println(getModifiedBowl(marbles));
	}
}