c+++++++++++++++++++++

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

long long tinh1 (double a)
{
  long long s = 0;
  if (a > 0)
  {
    s += 10000;
    a -= 1;
    if (a > 0)
    {
      if (a > 29)
      {
        s += 13900 * 29;
        a -= 29;
      } else 
      {
        s += 13900 * a;
        a = 0;
      }
    }
    if (a > 0)
    {
      if (a > 30)
      {
        s += 11600 * 30;
        a -= 30;
      }
      else 
      {
        s += 11600 * a;
        a = 0;
      }
    }
    if (a > 0){
      s += 10300 * a;
    }
  }
  return s;
}
long long tinh2(long long b){
  if (b <= 5) return 0;
  else 
  {
    long long c = b - 5;
    return 30000 * (c + 3) / 4;
  }
}
double a;
long long b;
int main()
{
  ios::sync_with_stdio(false);
  cin.tie(0);
  cin >> a >> b;
  cout << tinh1(a) + tinh2(b);
  return 0;
}

#include <iostream>
using namespace std;
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    long long x,y;cin>>x>>y;
    long long ans=(y>5)?(y/4)*3000:0;
    if(x<=1) ans+=10000;
    else if(x<=30) ans+=10000+(x-1)*13900;
    else if(x<=60) ans+=10000+29*13900+(x-30)*11600;
    else ans+=10000+29*13900+30*11600+(x-60)*10300;
    cout<<ans;
    return 0;
}