[HackerEarth] Barry Allen and Jay Garrick are arch-rivals. To prove himself superior than Barry, Jay takes Barry to a Lighthouse, consisting of 'N' bulbs. Jay gives Barry a sequence of n integers. The - 题解

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题号 P15822
标题 [HackerEarth] Barry Allen and Jay Garrick are arch-rivals. To prove himself superior than Barry, Jay takes Barry to a Lighthouse, consisting of 'N' bulbs. Jay gives Barry a sequence of n integers. The
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