import java.util.ArrayList;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		try (Scanner scan = new Scanner(System.in)) {
			int N = scan.nextInt();
			int K = scan.nextInt();
			String S = scan.next();
			
			ArrayList<Node> list = new ArrayList<>();
			int count = 0;
			for(int i=0; i<S.length(); i++) {
				if(S.charAt(i) == '(') {
					list.add(new Node(i+1));
					count++;
				} else if(S.charAt(i) == ')') {
					count--;
					list.get(count).end = i+1;
				}
			}
			
			for(int i=0; i<list.size(); i++) {
				if(list.get(i).first == K) {
					System.out.println(list.get(i).end);
				} else if(list.get(i).end == K) {
					System.out.println(list.get(i).first);
				}
			}
		}
	}
}

class Node {
	int first;
	int end;
	Node(int f) {
		first = f;
		end = -1;
	}
}