#include<iostream> int main() { int a,b; scanf("%d %d",&a,&b); switch(b) { case 1:if(b=1)printf("3");break; case 2:if((a%400==0)||(a%100!=0&&a%4==0))printf("29");else printf("28");break; case 3:if(b=3)printf("31");break; case 4:if(b=4)printf("30");break; case 5:if(b=5)printf("31");break; case 6:if(b=6)printf("30");break; case 7:if(b=7)printf("31");break; case 8:if(b=8)printf("31");break; case 9:if(b=9)printf("30");break; case 10:if(b=10)printf("31");break; case 11:if(b=11)printf("30");break; case 12:if(b=12)printf("31");break; } return 0; }