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

/**************************************************************
	Problem: 1091
	User: zhouhongyi
	Language: C++
	Result: Accepted
	Time:3 ms
	Memory:2072 kb
****************************************************************/