题解 | 挑7
while True: try: n = int(input()) count = 0 for i in range(7,n+1): if i % 7 == 0 or '7' in str(i): count += 1 print(count) except: break
while True: try: n = int(input()) count = 0 for i in range(7,n+1): if i % 7 == 0 or '7' in str(i): count += 1 print(count) except: break
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