#include<cstdio>
#define filein "lacate.in"
#define fileout "lacate.out"
using namespace std;

int main()
{
    freopen(filein,"r",stdin);
    freopen(fileout,"w",stdout);
    int n,i;
    scanf("%d",&n);
    printf("%d %d\n",(n*(n-1))/2,n-1);

    return 0;
}