#include<bits/stdc++.h>
using namespace std;
int main() {
    int n,j=0,r=0;
    cin>>n;
    for(int i=1;i<=n;i++){
        if(i%2==0) r=r+i;
        else j=j+i;
    }
    cout<<j<<" "<<r
}
/**************************************************************
	Problem: 1091
	User: linzihang
	Language: C++
	Result: Compile Error
****************************************************************/