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A. Digit Minimization There is an integer n without zeros in its decimal representation. Alice and Bob are playing a game with this integer. Alice starts first. They play the game in turns. On her turn, Alice must swap any two digits of the integer that ar

A. Subtle Substring Subtraction 给你一个字符串，Alice先手并取偶数长度的子串，Bob后手并取奇数长度的子串，问取完整个字符串谁的值最大，差值是多少 易知Alice一定会取最长的偶数子串，先特判一下字符串长度为1时Bob赢 然后如果是偶数长度就直接取完，否则判断一下第一个字符和最后一个字符谁大，留一个小的给Bob剩下的全部取完就行 /**************** *@description:for the Escape Project *@author: Nebul