#include "iostream"
 
using namespace std;
 
 
 
int main()
 
{
 
int n,i,k;
 
cout << " Vvedite chislo do kotorogo bydyt symirovatsya pari chisel " << endl;
 
cin >> n;
 
for(i=1;i<=n;i++)
{
cout<< i << " , " ;
if(i%2==0)
{
k=i+(i-1);
}
else 
continue;
cout << " Symma par chisel ravna " << k << endl; ;
}