题解 | #挑7#
挑7
http://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
n = int(input()) if n<1 or n>30000: print(-1) count = 0 for i in range(1,n+1): if i%7 ==0 or ('7' in str(i)) : #print(i) count +=1 print(count)
挑7
http://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b
n = int(input()) if n<1 or n>30000: print(-1) count = 0 for i in range(1,n+1): if i%7 ==0 or ('7' in str(i)) : #print(i) count +=1 print(count)
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