// Problem: A - kcal
// Contest: AtCoder - AtCoder Beginner Contest 205
// URL: https://atcoder.jp/contests/abc205/tasks/abc205_a
// Memory Limit: 1024 MB
// Time Limit: 2000 ms
// 
// Powered by CP Editor (https://cpeditor.org)

#include<bits/stdc++.h>
using namespace std ;
typedef long long ll ;
#define int ll 
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define mod 1000000007 
#define N 200010

signed main( )
{
    fast
    int testcases = 1 ;
    // cin >> testcases ;
    while( testcases -- )
    {
        float a,b ;
        cin >> a>>b ;
        float c=100;
        float r = b/c;
        
        float ans = r*a;
        
        cout<<ans<<endl;
        
        

        
        
        
    }
    return 0 ;
}    
#include <bits/stdc++.h>
using namespace std;

int cnt[200005];

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

  for(int i=a;i<=b;i++)
  {
    for(int j=1;j*j<=i;j++)
    {
      if(i%j==0)
      {
        //j, i/j
        cnt[j]++;
        if(j*j!=i) cnt[i/j]++;
      }
    }
  }

  for(int i=200000;i>=1;i--)
  {
    if(cnt[i]>1)
    {
      cout<<i;
      return 0;
    }
  }
}
