#include <bits/stdc++.h> using namespace std; int main() { int x,n; cin>>x>>n; int day = x; int sum = 0; while(n != 0) { if(day >= 1 && day <= 5) { sum += 250; } if(day == 7) { day = 1; } else { day++; } n--; } cout<<sum<<endl; return 0; }