/*input
37 450


*/

#include <bits/stdc++.h>
using namespace std;
 
#define fast ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define pb push_back
#define endl "\n"
#define sp " " 
#define all(v) v.begin(),v.end()
#define makepr(a,b) make_pair(a, b)
#define loop(i,k,n) for(ll i=k;i<n;i++)
#define rlop(i,n,k) for(ll i=n-1;i>=k;i--)
#define lop(i ,a) for(auto i : a)
#define vecl vector<ll>
#define vecprl vector<pair<ll, ll> > v;
#define mpll map<ll, ll>
#define mpsl map<string, ll>
#define prll pair<ll, ll>
#define setl set<ll>
#define mod(a,b) a%b
 
typedef long long ll;
typedef long double ld;
 
int main()
{
	fast;
	int n , m;
	cin >> n>> m;
	float k = n*1.0/100;
	cout<<m*k<<endl;
	return 0;
}
    
#include <iostream>
using namespace std;

int main(){
   float a,b;
   cin >> a >> b;

   cout << b/100 * a;
   return 0;
}
