快乐的数字

num = int(input())
count = 0
while (num!=1):
    length = list(str(num))
    num = 0
    for i in length:
　　num = num+ int(i)*int(i)
    count = count+1
　　if count >100:
　　　　break
if num==1:
　　print("true")
else:
　　print("false")