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1070 Mooncake (25 分) 1070 Mooncake (25 分) 1070 Mooncake (25 分) Mooncake is a Chinese bakery product traditionally eaten during the Mid-Autumn Festival 阅读全文
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1070 Mooncake (25 分) Mooncake is a Chinese bakery product traditionally eaten during the Mid-Autumn Festiv... 阅读全文
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1069 The Black Hole of Numbers (20 分) For any 4-digit integer except the ones with all the digits being th... 阅读全文
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1069 The Black Hole of Numbers (20 分) 1069 The Black Hole of Numbers (20 分) 1069 The Black Hole of Numbers (20 分) For any 4-digit integer except the o 阅读全文