68求助

测试点8,9,10,11WA

#include<bits/stdc++.h>
using namespace std;
string s,s1;
char str[110];
int site[110];
int main(){
    cin>>s;
    int leng = s.size(),top = 0;
    bool IsRight = false;
    for(int i = 0;i<leng;i++){
        char a = s[i];
        if(a == '['){
            top++;
            str[top] = a;
            site[i] = 1;
        }
        if(a == '('){
            top++;
            str[top] = a;
            site[i] = 1;
        }
        if(a == ']'){
            if(str[top] == '['){
                top--;
                site[i-1] = 0;
            }else{
                IsRight = false;
            }
        }
        if(a == ')'){
            if(str[top] == '('){
                top--;
                site[i-1] = 0;
            }else{
                IsRight = false;
            }
        }
    }
    if(top == 0) IsRight = true;
    if(s[0] == ')') IsRight = false;
    if(s[0] == ']') IsRight = false;
    if(IsRight) cout<<s;
    else{
        for(int i = 0;i<leng;i++){
            if(s[i] == '['){
                cout<<s[i];
                cout<<"]";
            }
            if(s[i] == '('){
                cout<<s[i];
                cout<<")";
            }
            if(s[i] == ']'){
                cout<<"[";
                cout<<s[i];
            }
            if(s[i] == ')'){
                cout<<"(";
                cout<<s[i];
            }
        }
    }
    return 0;
}