题解 | #挑7#
挑7
https://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
n = int(input())
count = 0
for i in range(7, n+1):
if i % 7 == 0:
count += 1
elif '7' in str(i):
count += 1
print(count)
2023-09-17 18:15 Python
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