#328. 兑换硬币
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ID: 328
Type: Default
1000ms
128MiB
Tried: 85
Accepted: 28
Difficulty: 6
Uploaded By:
兑换硬币
说明
用一张一元票换1分、2分和5分的硬币，每种至少一枚， 问有几种换法.
样例