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  1. #include<stdio.h>
  2. #include<iostream>
  3. #include<math.h>
  4. using namespace std;
  5. int main ()
  6. {
  7.     ios_base::sync_with_stdio(false);
  8.     cin.tie(NULL);
  9.     cout.tie(NULL);
  10.     long long t,x,i,y,z,f;
  11.     cin>>t;
  12.     while(t--){
  13.         cin>>x;
  14.         y=sqrt(x);
  15.         z=sqrt(y);
  16.         f=1;
  17.         if(x==y*y){f=0;
  18.         i=2;
  19.         while(i<=z){if(y%i==0){f=1;break;}
  20.         i++;}}
  21.         if(f==0 && x!=1){cout<<"YES\n";}
  22.         else{cout<<"NO\n";}
  23.     }
  24.     return 0;
  25.  
  26. }
Success #stdin #stdout 0s 4224KB
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stdin
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stdout
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YES
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https://ideone.com/OevbjD
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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