#include <iostream>
using namespace std;

int main() {
	int a, sum = 0, znach;

	cin >> a;

	while (sum <= a) {
		for (int i = 1;; i++) {
			sum += 1 / i;
			znach = i;
		}
	}

	cout << "From " << znach " to infinity";

	return 0;
}