#include <iostream>
#include <math.h>
using namespace std;

int main() {
	double D;
	float P;
	cin >> D >> P;

	float ans;
	P = (P*0.01)+1.0;
	//cout << P << "\n";
	ans = D*P;
	//cout << ans << "\n";

	cout << ans<< "\n";
	return 0;
}