#include <bits/stdc++.h>
#define ll long long
#define SZ(x) ((int)(x).size())
#define ALL(x) (x).begin(),(x).end()
#define REP(i,n) for(int i=0;i<n;i++)
#define REV(i,n) for(int i=n-1;i>=0;i--)
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define pri(a) cout<<a<<endl
#define prii(a,b) cout<<a<<" "<<b<<endl
using namespace std;
int main()
{
string s;
int t;
scanf("%d", &t);
getchar();
while(t--)
{
getline(cin,s);
stack<char> st;
int fl = 0;
REP(i,SZ(s))
{
if(s[i]=='(' or s[i]=='[') st.push(s[i]);
else if(s[i]==')' or s[i]==']')
{
if(SZ(st))
{
if(st.top()=='(' and s[i]==')') st.pop();
else if(st.top()=='[' and s[i]==']') st.pop();
else fl=1;
}
else fl=1;
}
if(fl) break;
}
if(SZ(st)) fl=1;
if(fl) puts("No");
else puts("Yes");
}
return 0;
}
No comments:
Post a Comment