题解 | #挑7#
挑7
https://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
count = 0
number = []
n = int(input())
for i in range(n):
j = i+1
if j % 7 == 0:
count += 1
number.append(j)
else:
for k in str(j):
if (k == '7') and (j not in number):
count += 1
number.append(j)
print(count)暴力解题
投递华为等公司10个岗位 >