def kakko(N, K, S):
    K = K - 1
    S = list(S)
    print(S[K])
    cntl = 0
    cntr = 0
    if S[K] == '(':
        i = K + 1
        while i <= N:
            if S[i] == '(':
                cntl += 1
            elif S[i] == ')':
                cntr += 1
            if cntr > cntl:
                break
            i += 1
        return K + cntr + cntl + 1
    elif S[K] == ')':
        i = K - 1
        while i >= 0:
            if S[i] == ')':
                cntr += 1
            elif S[i] == '(':
                cntl += 1
            if cntl > cntr:
                break
            i -= 1
        return K - cntr - cntl + 1

if __name__ == '__main__':
    N, K = map(int, input().split())
    S = input()
    print(kakko(N, K, S))