#include <iostream>
using namespace std;
int main() {
int n,k;
float x;
cin >> n;
cin >> k;
x = n/((100-k)/100);
cout << x;
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7CglpbnQgbixrOwoJZmxvYXQgeDsKCWNpbiA+PiBuOwoJY2luID4+IGs7Cgl4ID0gbi8oKDEwMC1rKS8xMDApOwoJY291dCA8PCB4OwoJcmV0dXJuIDA7Cn0=