print(int(input())/eval(input())**2)

print(2-int(input())%2-int(input())%2)

[print(n+n[::-1])for n in[input()]]

print("YNeos"[[len(i)for i in input().split("/")]!=[2,2,4]::2])

print((lambda a,b=[2021,2,14]:"=><"[(a>b)-(a<b)])([*map(int,open(0))][::-1]))

print("Cat Giraffe Chicken Ostrich Dolphin Plesiosaurs Penguin Duck".split()[sum(i*(input()>"O")for i in[4,2,1])])

print([i for i in map(str,range(int(input())+1,8**5))if{*i}<={*"02468"}and len(i)==len({*i})][0])

(lambda s,d:([d.extend(w+c for w in d[:])for c in s],print(*d[1:],sep="\n")))(input(),[""])

print((lambda x:[[["Extremely "*(x>=35)+"Obese","Overweight"][x<30],"Normal"][x<25],"Underweight"][x<18.5])(int(input())/float(input())**2))

(lambda n,s={0},r=range:([s.add(max(s)+j)for n in r(13)for j in[*r(2,n+3),*r(n+1,0,-1)]],print("".join(f"{i+1}{' \n'[i in s]}"for i in r(n)))))(int(input()))