#include<iostream> int main(){ int a,b; scanf("%d %d",&a,&b); if(a%100==0){ if(a%400==0){ switch(b){ case 1:printf("31");break; case 2:printf("29");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; } }else{ switch(b){ case 1:printf("31");break; case 2: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; } } }else if(a%4==0){ switch(b){ case 1:printf("31");break; case 2:printf("29");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; } }else{ switch(b){ case 1:printf("31");break; case 2: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; }