#include <iostream>
using namespace std;
int main() {
int n;
int org = 0;
cin >> n;
double i = 1;
double sum = 0;
do {
sum += 1.0 / ((i) * (i + 1));
i++;
} while (i <= n);
cout << fixed;
cout << sum << " ";
cout << 1.0 / ((n * (n + 1)*(n+1)));
cout << (1.0 - sum) * 1e9 << endl;
}
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