#include<bits/stdc++.h>
using namespace std;
int main(){
int i,j=0,n,m=0;
cin>>n;
for(i=1;i<=n;i++)
{
if(i%2==0)
m=m+i;
else
j=j+i;
}
cout<<j<<" "<<m;
return 0;
}
/**************************************************************
	Problem: 1091
	User: hongjiaming
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/