# Largest of Tenth Digit and Unit Digit

n=int(input())
t=(n//10)%10
u=n%10 
if(t>u):
    print(t)
else:
    print(u)

#Alphabet for digit

n=input()
l="abcdefghi"
for i in n:
    if(i.isnumeric()):
        print(l[int(i)-1],end="")
    else:
        print(i)
        
#Middle N Characters in String 

s=input().strip()
n=int(input())
m=len(s)-n 
print(s[(m+1)//2:len(s)-(m//2)])

#Square Even and Cube Odd 

n=int(input())
l=list(map(int,input().split()))
for i in range(n):
    if(l[i]%2==0):
        print(l[i]**2,end=" ")
    else:
        print(l[i]**3,end=" ")
        
#Game Name by Character 

c=input().strip()
if(c=="a"):
    print("Athletics")
elif(c=="b"):
    print("Basketball")
elif(c=="c"):
    print("Cricket")
elif(c=="d"):
    print("Discus throw")
elif(c=="g"):
    print("Golf")
elif(c=="h"):
    print("Hockey")
elif(c=="f"):
    print("Football")
elif(c=="t"):
    print("Tennis")
else:
    print("Invalid")