include <bits/stdc++.h>

using namespace std;

double fn(double B) {

double temp = 0.5, sum = 0.0;

for (int i = 1; i <= B; i++) {

	temp =  1.0 / (i + 1.0);
	sum += temp;
}

return sum;

}

int main() {

double a = 0, c = 0;
int b[11];

for (int i = 1; i <= 11; i++) {
	b[i]=1;
	scanf("%lf", &a);

	if (a != 0) {
		for (int j = 1; fn(j) < a; j++) {

			b[i] = j + 1;
		}
	} else {
		break;
	}

	c++;

}

for (int i = 1; i <= c; i++) {

	printf("%d\n", b[i]);
}

}