题解 | #自守数#
自守数
https://www.nowcoder.com/practice/88ddd31618f04514ae3a689e83f3ab8e
import sys for line in sys.stdin: a = line.split() n = int(a[0]) out = 0 for i in range(n+1): if int(str(i**2)[-len(str(i)):]) == i: out += 1 print(out)
字符串与整数相互转换。
自守数
https://www.nowcoder.com/practice/88ddd31618f04514ae3a689e83f3ab8e
import sys for line in sys.stdin: a = line.split() n = int(a[0]) out = 0 for i in range(n+1): if int(str(i**2)[-len(str(i)):]) == i: out += 1 print(out)
字符串与整数相互转换。
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