#include<bits/stdc++.h> using namespace std; int main() { int sum = 0; int sum1 = 0; int n; cin >> n; for (int i = 1; i <= n; i++) { if (i % 2 == 1) { sum = sum + i; } } cout<<sum<<" "; for (int i = 1; i <= n; i++) { if (i % 2 == 0) { sum1 = sum1 + i; } } cout<<sum1; return 0; }