Кръг

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int k = in.nextInt();
        int[] studentNumbers = new int[n];

        for (int i = 0; i < studentNumbers.length; i++) {
            studentNumbers[i] = in.nextInt();
        }

        int loserIndex = k - 1;
        int loserNumber = studentNumbers[loserIndex];
        studentNumbers[loserIndex] = 0;

        for (int i = 0; i < studentNumbers.length - 2; i++) {
            for (int j = 1; j <= loserNumber;) {
                loserIndex++;
                if (loserIndex >= studentNumbers.length){
                    loserIndex -= studentNumbers.length;
                }

                if(studentNumbers[loserIndex] > 0){
                    j++;
                }
            }
            loserNumber = studentNumbers[loserIndex];
            studentNumbers[loserIndex] = 0;
        }

        for (int i = 0; i < studentNumbers.length; i++) {
            if(studentNumbers[i] > 0){
                System.out.println(i + 1);
                return;
            }
        }
    }
}