#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000

int main(){
	
	long long d,p;
	cin>>d>>p;
	
	d *= 100+p;
	d /= 100;
	cout<<d<<endl;
	
	return 0;
}