#include <iostream>
using namespace std;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
long long code, quantity;
if (cin >> code >> quantity) {
if (code < 1 || code > 5 || quantity <= 0) {
cout << "Invalid\n";
return 0;
}
long long price = 0;
if (code == 1) price = 50000;
else if (code == 2) price = 80000;
else if (code == 3) price = 60000;
else if (code == 4) price = 70000;
else if (code == 5) price = 40000;
long long total = price * quantity;
if (total >= 300000) {
total = total * 90 / 100;
} else if (total >= 150000) {
total = total * 95 / 100;
}
cout << total << "\n";
}
return 0;
}
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