y,m=map(int,input().split())
match m:
    case 4|6|9|11:
        print(30)
    case 2:
        if y%4==0 and y%100!=0 or y%400==0:
            print(29)
        else:
            print(28)
    case 1|3|5|7|8|10|12:
        print(31)