题解 | #挑7#
挑7
https://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
#1 Multiples of 7: % == 0
#2 Include 7: str(n) and search for 7
# Overlap of #1 and #2 can use or
n = int(input())
c = 0
for i in range(1, n+1):
if '7' in str(i) or i % 7 == 0:
c += 1
print(c)
用or来合并同时能被7整除以及含有7的情况
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