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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int main()
  4. {
  5.     long long  x,t;
  6.     cin>>x>>t;
  7.     long long area=0.5*x*t;
  8.     long long sqt=sqrt(area);
  9.     int flag=1;
  10.     if (area==0||area==1||area<1){
  11.        cout<<"NO"<<endl;
  12.        return 0;
  13.     }
  14.     for (long long i=2;i<=sqt;i++){
  15.        if (area%2==0){
  16.         flag=0;
  17.        }
  18.     }
  19.  
  20.  
  21.     if (flag==0) cout<<"NO";
  22.     else if (flag==1) cout<<"YES";
  23.  
  24.  
  25.  
  26.  
  27.         return 0;
  28. }
  29.  
Success #stdin #stdout 0.01s 5520KB
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stdin
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Standard input is empty
stdout
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NO
https://ideone.com/P3ez4q
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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