#include<bits/stdc++.h> using namespace std; int main(){ int n; int o_sumi=0,j_sumi=0; cin>>n; for (int i=0;i<=n;i++){ if (i%2==0)o_sumi+=i; else j_sumi+=i; } cout<<j_sumi<<" "<<o_sumi<<endl; return 0; }