Untitled

#include <iostream>

using namespace std;

int main() {
	int a, b;
	cin >> a >> b;
	int per;
	per = (100 * b) / a;
	if (per == 0) cout << 0;
	else if (per >= 1 && per <= 10) cout << 1;
	else if (per >= 11 && per <= 50) cout << 2;
	else if (per >= 51 && per <= 70) cout << 3;
	else if (per >= 71 && per <= 84) cout << 4;
	else cout << 5;
}