/// CUSTEZ TEMPLATE ///
// Satus: BAI23A KIEN GIANG //
#include <bits/stdc++.h>
#define For(i,n,m) for(int i=n; i<=m; i++)
#define ForD(i,n,m) for(int i=n; i>=m; i--)
#define LLI long long int
#define int long long
#define double long double
#define INF 0x3f3f3f3f3f
#define db(n) cout << (#n) << " = " << n << endl
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define max3(a,b,c) max(max(a, b), c)
#define max4(a,b,c,d) max(max(a, b), max(c, d))
#define min3(a,b,c) min(min(a, b), c)
#define min4(a,b,c,d) min(min(a, b), min(c, d))
#define lwb lower_bound
#define upb upper_bound
#define PI 3.14159265
#define name ""
using namespace std;
typedef pair < int, int > _2i;
typedef pair < int, _2i > _3i;
typedef pair < _2i, _2i > _4i;
typedef vector < int > _vi;
typedef vector < _2i > _v2i;
typedef vector < _vi > _2vi;
typedef vector < _2vi > _3vi;
typedef vector < _3i > _v3i;
typedef vector < _v2i > _2v2i;
typedef vector < _4i > _v4i;
/// Author: @CustezTruong ig: custez.tr ///
int n, t;
void process()
{
cin >> n >> t;
int tien1=0;
if (n<2) tien1 = n*25000;
else
{
tien1 += 1*25000;
if (n>12)
{
tien1 += 11*15700;
if (n>25)
{
tien1 += 13*15000;
if (n>100)
{
tien1 += 75*14500;
tien1 += (n-100)*13000;
}
else tien1 += (n-25)*14500;
}
else tien1 += (n-12)*15000;
}
else tien1 += (n-1)*15700;
}
int tien2=0;
if (t<2) tien2 = 50000*t;
else if (2<=t && t<=5) tien2 = 45000*t;
else if (6<=t && t<=10) tien2 = 40000*t;
else if (11<=t && t<=15) tien2 = 35000*t;
else tien2 = 25000*t;
cout << tien1 + tien2;
}
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(0);
// freopen(name".inp", "r", stdin);
// freopen(name".out", "w", stdout);
process();
return 0;
}
/*
* notes:
* #HotWheels #DevGang #Custez #CTG
* "i will try to get Corvette C8!"
* "i copied this code from the internet :))"
* END.
*/
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