☠⚐✞✋👍☜ 💧⚐☹🕆❄✋⚐☠

#include<iostream>
using namespace std;
int main(){
int z,t,m,num=0,u;
cin>>z>>t;
for(int i=1;i<=t;i++) {
u=(z+i-1)%7;
if(u!=0 and u!=6) num+=250;
}
cout<<num;
}