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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6.   int n;
  7.   cin >> n;
  8.   if(n < 2)
  9.   {
  10.     cout<<"NO"<<endl;
  11.     return 0;
  12.   }
  13.   for(int i = 2 ; i < n; i++)
  14.   {
  15.     if(n % i == 0)
  16.     {
  17.       cout<<"NO"<<endl;
  18.       return 0;
  19.     }
  20.   }
  21.   cout<<"YES"<<endl;
  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/8Iq2GF
language:
C++ (gcc 8.3)
created:
251 days ago
visibility:
public

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