WA56（on8-12）性感小代码在线求调教（玄关）

#include<bits/stdc++.h>
using namespace std;
//#define int long long
//const int N=1e5+5;
string s;
signed main(){
	cin>>s;
	int len=s.length();
	for(int i=0;i<len;i++){
		switch (s[i]) {
		case '(':
			if(i+1<len&&s[i+1]==')')i++;
			cout<<"()";
			break;
		case ')':
			cout<<"()";
			continue;
			break;
		case '[':
			if(i+1<len&&s[i+1]==']')i++;
			cout<<"[]";
			break;
		case ']':
			cout<<"[]";
			break;
		default:
			
			break;
		}
	}
	return 0;
}