//No.22 括弧の対応

import java.util.*;
import java.io.*;
import static java.util.Arrays.*;
import static java.lang.Math.*;

public class No22 {
    
    static final Scanner sc = new Scanner(System.in);
    static final PrintWriter out = new PrintWriter(System.out,false);

    static void solve() {
        int n = sc.nextInt();
        int k = sc.nextInt()-1;
        String s = sc.next();
        ArrayDeque<Integer> stack = new ArrayDeque<Integer>();
        for (int i=0; i<n; i++) {
            if (s.charAt(i) == '(') {
                stack.add(i);
            }else {
                int x = stack.pollLast();
                if (x == k) {
                    out.println((i+1));
                }else if (i == k) {
                    out.println((x+1));
                }
            }
        }
    }

    public static void main(String[] args) {
        long start = System.currentTimeMillis();

        solve();
        out.flush();

        long end = System.currentTimeMillis();
        //trace(end-start + "ms");
        sc.close();
    }

    static void trace(Object... o) { System.out.println(deepToString(o));}
}