摘要：
On a broken calculator that has a number showing on its display, we can perform two operations: Double: Multiply the number on the display by 2, or; D 阅读全文
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650. 2 Keys Keyboard
2020-12-29 03:03 by Mux1, 60 阅读, 收藏,
摘要：
Initially on a notepad only one character 'A' is present. You can perform two operations on this notepad for each step: Copy All: You can copy all the 阅读全文
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