题解 | #自守数#
自守数
https://www.nowcoder.com/practice/88ddd31618f04514ae3a689e83f3ab8e
n = int(input())
def func(i):
stri = str(i**2)
if stri.endswith(str(i)): # 是否以某个字符串结尾，参数需要是字符串
return True
else:
return False
counter = 0
for i in range(n+1):
if func(i):
counter += 1
print(counter)
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