78pts + #1,2,3WA求助

#include <bits/stdc++.h>
using namespace std;
char s[105];
stack<int> s1, s2;
bool b[105];
int main( ) {
    memset(b, 0, sizeof(b));
    cin >> s;
    for(int i = strlen(s) - 1; i >= 0; i--) {
        if(s[i] == ']') {
            s2.push(i);
//          cout << "push2" << endl;
        }
        if(s[i] == ')') {
            s1.push(i);
//          cout << "push1" << endl;
        }
        if(1) {
            if(s[i] == '(') {
//              cout << "go with(" << endl;
                if(!s1.empty() || !s2.empty()){
                    while(!s1.empty() && !s2.empty() && s2.top() > i && s2.top() < s1.top()) {
                        s2.pop();
                    }
                    if(!s1.empty()) {
                        b[i] = 1;
                        b[s1.top()] = 1;
//                      cout << i << " " << s1.top() << endl;
                        s1.pop();
                    }
                }
            }
            if(s[i] == '[') {
//              cout << "go with[" << endl;
                if(!s1.empty() || !s2.empty()) {
                    while(!s1.empty() && !s2.empty() && s1.top() > i && s1.top() < s2.top()) {
                        s1.pop();
                    }
                    if(!s2.empty()) {
                        b[i] = 1;
                        b[s2.top()] = 1;
//                      cout << i << " " << s2.top() << endl;
                        s2.pop();
                    }
                }
            }
        }
//      cout << s[i] << endl;
    }
    for(int i = 0; i < strlen(s); i++) {
        if(b[i] != 1) {
            if(s[i] == '(' || s[i] == ')') {
                cout << "()";
            }
            else {
                cout << "[]";
            }
        }
        else {
            cout << s[i];
        }
    }
/*  cout << endl;
    for(int i = 0; i < s.size(); i++) {
        cout << b[i] << " ";
    }*/
}