#include <iostream>
using namespace std;
int main() {
int X,Y,a;
cin>>X>>Y;
a=1000-(Y+X)*4;
cout<<a;
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7CglpbnQgWCxZLGE7CgljaW4+Plg+Plk7CglhPTEwMDAtKFkrWCkqNDsKCWNvdXQ8PGE7CglyZXR1cm4gMDsKfQ==