#include <bits/stdc++.h>
using namespace std;
int main() {
// your code goes here
map<string,int>m;
int t,c;
cin>>t;
while(t--)
{
string s;
cin>>s;
m[s]++;
for(auto x:m)
{
c=0;
if(x.second>1)
{
cout<<"YES\n";
c=2;
}
break;
}
if(c!=2)
{
cout<<"NO\n";
}
}
return 0;
}
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