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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.    long long x,y=0;
  8.    cin>>x;
  9.  
  10.    for(int i=2;i<=x/2;i++){
  11.         if(x%i==0){
  12.             y=1;
  13.             cout<<"NO";
  14.             break;
  15.         }
  16.  
  17.    }
  18.    if(y==0){
  19.     cout<<"YES";
  20.    }
  21. }
  22.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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Standard input is empty
stdout
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NO
https://ideone.com/pSwRZa
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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