sec cpp2

#include <iostream>
#include <string>
using namespace std;
int main() {
    string s;
    int n=0, a=0, b=0;
    while (cin >> s) {
        for (auto c : s) {
            if (c == '(') n++;
            else if (c == ')') n--;
            else if (c == '[') a++;
            else if (c == ']') a--;
            else if (c == '{') b++;
            else b--;
            if (a<0 or b<0 or n<0) {
                cout << 0;
                break;
            }
        }
    } if (n==1 and a==1 and b==1) cout << 1;
    else cout << 0;
    return 0;
}