题解 | #自守数#
自守数
https://www.nowcoder.com/practice/88ddd31618f04514ae3a689e83f3ab8e
while True:
try:
n = int(input())
count = 0
for i in range(0, n+1):
if int(str(i**2 - i)[::-1][:len(str(i))]) == 0:
count += 1
print(count)
except:
break
我也遇到了，所以我早他一步
