fin = open('input.txt', 'r', encoding='utf8')
handle = open("output.txt", "w")
data = fin.read()
my_list = list(data)
#data='2002'
if len(my_list) == 4:
    if my_list[0] == my_list[3] and my_list[1] == my_list[2]:
        handle.write(1)
    else:
        handle.write(0)
else:
    handle.write(0)

handle.close()
fin.close()