#include
using namespace std;
int main()
{ int n;
long long int x;
cin>>n;
if(n ==1 || n== 2 )
cout<<-1;
else if(n % 2== 0){
x = (n * n )/4;
cout<<1LL*(x-1)<<" “<<(x+1);
}
else if(n % 2==1){
x = n* n +1;
cout<<1LL*(x/2 -1)<<” "<<x/2;
}
return 0;
}
check ur odd case.
it should be
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