题解

#include <iostream>
using namespace std;
int main(){
int a,b,sum = 0;
cin >> a >> b;
for(int i = 1;i <= b;i++){
if(a != 6 && a != 7){
sum += 250;
}if(a == 7){
a = 1;
}else{
a++;
}
}cout << sum;
return 0;
}