#include<bits/stdc++.h>
using namespace std;
int main()
{
unsigned long long n,ans=0;
int x;
cin >> x >> n;
for(int i=0;i<n;i++)
{
if((x!=6)&&(x!=7))
ans += 250;
if(x==7)
x=1;
else
x++;
}
cout << ans;
return 0;
}
by 必胜 @ 2018-10-15 13:22:31
谢谢大佬
by 疯狂小源 @ 2018-10-15 13:28:58