题解 | #自守数#
自守数
https://www.nowcoder.com/practice/88ddd31618f04514ae3a689e83f3ab8e
import sys for line in sys.stdin: a = int(line.rstrip()) list1 = [] n=0 for i in range(a+1): #if str(i) == str(i*i): if str(i*i)[-len(str(i)):] == str(i): n+=1 print(n)
str(i*i)[-len(str(i)):] == str(i) 一个数是否等于另一个数的末尾