uva-673 平衡的括號，棧模擬

棧下溢或者最後不爲空，則輸出No
gets在uva不能用，只好改成cin.getline了

#include <cstdio>
#include <cstring>
#include <vector>
#include <queue>
#include <iostream>
using namespace std;
#define DEBUG
const int maxn=128+5,maxv=26;
int t;
char s[maxn];
char q[maxn];
void solve(){
    int t=0;
    int len=strlen(s);
    for(int i=0;i<len;i++){
        if(s[i]=='('||s[i]=='[')
            q[t++]=s[i];
        else if(s[i]==')'||s[i]==']'){
            if(t==0){cout<<"No\n";return;}
            char c=q[t-1];t--;
            // printf("%c %c\n", s[i],c);
            if(s[i]==')'&&c=='('){}
            else if(s[i]==']'&&c=='['){}
            else{cout<<"No\n";return;}
        }
    }
    if(t==0)
    cout<<"Yes\n";
    else
        cout<<"No\n";
}
int main(){
#ifdef DEBUG
    freopen("in.txt", "r", stdin);
    freopen("out.txt", "w", stdout);
#endif
    cin>>t;
    getchar();
    while(t--){
        cin.getline(s,maxn+10);
        // cout<<s;
        solve();
    }
#ifdef DEBUG
    fclose(stdin);
    fclose(stdout);
#endif
    return 0;
}