#include<bits/stdc++.h>
using namespace std;
int main(){
    int a, b;
    while(cin>>a>>b){
        cout<<((a==0)?0 :
                    (a==1||a==3||a==4)?
                        ((b<10)?0:
                         (b<30)?(b-10)*3+1:
                         (b<70)?(b-10)*3+2:
                         (b<120)?(b-10)*3+3:
                         (b<=200)?(b-10)*3+6:0):
                    (a==2)?
                        ((b<8)?0:
                         (b<30)?(b-8)*3+1:
                         (b<70)?(b-8)*3+2:
                         (b<120)?(b-8)*3+3:
                         (b<=200)?(b-8)*3+6:0):0)<<endl;
    }
    return 0;
}