import java.util.ArrayDeque;
import java.util.Deque;

public class Solution {
    public static int bracket(String s) {
        Deque<Character> stack = new ArrayDeque<>();

        for (char v : s.toCharArray()) {
            switch (v) {
                case ')':
                    if (stack.isEmpty() || stack.pop() != '(') {
                        return 0;
                    }
                    break;
                case ']':
                    if (stack.isEmpty() || stack.pop() != '[') {
                        return 0;
                    }
                    break;
                case '}':
                    if (stack.isEmpty() || stack.pop() != '{') {
                        return 0;
                    }
                    break;
                default:
                    stack.push(v);
                    break;
            }
        }

        return stack.isEmpty() ? 1 : 0;
    }
}