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