№192

#include <iostream>
using namespace std;

int main() {
	double a;
	int i = 1, n;
	cout << "a =" << endl;
	cin >> a;
	for (n = 2; i > a; n+1)
	{
		i = i + (1 / n);
	}
	cout << n << endl;
	return 0;
}