#include<bits/stdc++.h> using namespace std; int a[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; int main(){ int n,d; cin>>n>>d; if(d2){ if(n%40 && n%100!=0||n%400==0){ cout<<29; } else{ cout<<28; } } else{ cout<<a[d]; } return 0; }