#include<bits/stdc++.h> using namespace std; int main(){ int m,n; cin>>m>>n; if(m%40 or m%4000){ if(n!=2 and n!=4 and n!=6 and n!=9 and n!=11){ cout<<31; }else if(n4 or n6 or n9 or n11){ cout<<30; }else if(n=2){ cout<<29; } }else if(m%4!=0 or m%400!=0){ if(n!=2 and n!=4 and n!=6 and n!=9 and n!=11){ cout<<31; }else if(n4 or n6 or n9 or n11){ cout<<30; }else if(n=2){ cout<<28; } } return 0; }