#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int week,n,km=0; cin>>week>>n; while(n>0){ week++; n--; if(week>7)week=1; if(week<=5) km+=250; } cout<<km<<endl; return 0; }