63pts 求助

#include<bits/stdc++.h>
using namespace std;
char zuo[101],you[101];
int top,sta[101];
int main(){
    string s;
    cin>>s;
    int len=s.length();
    for(int i=0;i<len;i++){
        if(s[i]=='('||s[i]=='['){
            zuo[++top]=s[i];
            sta[top]=i;
            if(s[i]=='(')you[i]=')';
            else you[i]=']';
        }
        if(s[i]==')'){
            if(top!=0&&zuo[top]=='('){
                you[sta[top]]=' ';
                top--;
            }
            else you[i]='(';
        }
        if(s[i]==']'){
            if(top!=0&&zuo[top]=='['){
                you[sta[top]]==' ';
                top--;
            }
            else you[i]='[';
        }
    }
    for(int i=0;i<len;i++){
        if(you[i]=='('||you[i]=='[')cout<<you[i]<<s[i];
        else if((you[i]==')'||you[i]==']'))cout<<s[i]<<you[i];
        else cout<<s[i];
    }
    return 0;
}

哪里错了感觉思路挺对的