题解 | #自守数#
自守数
https://www.nowcoder.com/practice/88ddd31618f04514ae3a689e83f3ab8e
import sys
data=int(sys.stdin.readline())
def se(n):
length=len(str(n))
if str(int(n*n))[-1*length:]==str(n):
return True
else:
return False
count=0
for i in range(0,data+1):
if se(i):
count=count+1
print(count)
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