#include <bits/stdc++.h> using namespace std; int main() { int n,m,sum = 0,temp = 1; cin>>n>>m; for(int i = n;temp <= m;i++) { if(i > 7) { i -= 7; } if(i != 6 && i != 7) { sum++; } temp++; } cout<<sum*(150+100)<<endl; return 0; }