简单算术 - Problem

#12739. 简单算术

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AI Translation — This statement was translated using AI and may contain inaccuracies. Please refer to the original statement if in doubt.

Eva 是一名三年级的小学生。她刚刚学会了如何对任意精度的整数进行加减法运算。她的家庭作业是计算一些表达式。这太无聊了，所以她决定在作业中加点小花招。Eva 想要在表达式中添加一些加号和减号，使得表达式的值尽可能大。

输入格式

输入文件的单行包含原始算术表达式。它仅包含数字、加号（‘+’）和减号（‘-’）符号。

原始表达式是合法的，即： 数字没有前导零； 没有两个连续的符号； * 表达式的最后一个字符是数字。

原始表达式的长度不超过 1000 个字符。

输出格式

输出一行——添加了若干加号和减号后的原始表达式。输出的表达式必须满足与原始表达式相同的合法性约束。其值必须尽可能大。

样例

样例输入 1

10+20-30

样例输出 1

10+20-3+0

样例输入 2

-3-4-1

样例输出 2

-3-4-1

样例输入 3

+10

样例输出 3

+10

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