题解 | #挑7#
挑7
https://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
n = int(input())
sum = 0
C = '7'
for i in range(1, n+1):
if i % 7 == 0:
sum += 1
elif C in str(i):
sum += 1
print(sum)
挑7
https://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
n = int(input())
sum = 0
C = '7'
for i in range(1, n+1):
if i % 7 == 0:
sum += 1
elif C in str(i):
sum += 1
print(sum)
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