PAT (Advanced Level) Practice — 1124 Raffle for Weibo Followers （20 分）

題目鏈接：https://pintia.cn/problem-sets/994805342720868352/problems/994805350803292160 John got a full mark on PAT. He was so happy that he decided to hold a raffle（抽獎） for his followers on Weibo -- that

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