猫史档案馆

# 题目
#n=int(input(":"))
#j=n
#sum=0
#while n>0:
# sum=_____
# n=n//10
#if__________:
# print("yes")
#else:
# print("no")

#答案1
n=int(input(":"))
j=n
sum=0
while n>0:
sum=str(j)
n=n//10
if sum[::-1] == str(j):
print("yes")
else:
print("no")

#答案2
n = int(input(":"))
j = n
sum = 0
while n > 0:
sum =sum*10 +n%10
n = n//10
if sum==j:
print("yes")
else:
print("no")