#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,s1=0,s2=0;
	cin>>n;
	for(int i=1;i<=n;i++){
		if(i%2==0) s1=s1+i;
		else s2=s2+i;
	}
	cout<<s2<<" "<<s1;
}
/**************************************************************
	Problem: 1091
	User: fandaohan
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:2072 kb
****************************************************************/