CF898F.Restoring the Expression

A correct expression of the form a+b=c was written; a, b and c are non-negative integers without leading zeros. In this expression, the plus and equally signs were lost. The task is to restore the expression. In other words, one character '+' and one character '=' should be inserted into given sequence of digits so that:

• character'+' is placed on the left of character '=',
• characters '+' and '=' split the sequence into three non-empty subsequences consisting of digits (let's call the left part a, the middle part — b and the right part — c),
• all the three parts a, b and c do not contain leading zeros,
• it is true that a+b=c.

It is guaranteed that in given tests answer always exists.

一个形如 $a+b=c$ 的正确表达式被写出；其中 $a$、$b$ 和 $c$ 均为不含前导零的非负整数。在该表达式中，“+”号和“=”号丢失了。任务是恢复该表达式。换言之，需在给定的数字序列中插入一个字符 + 和一个字符 =，使得：

• 字符 + 位于字符 = 的左侧；
• 字符 + 和 = 将该序列划分为三个非空的纯数字子序列（我们称左侧部分为 $a$，中间部分为 $b$，右侧部分为 $c$）；
• 三部分 $a$、$b$ 和 $c$ 均不含前导零；
• 满足等式 $a + b = c$。

保证在给定的测试数据中，答案一定存在。

The first line contains a non-empty string consisting of digits. The length of the string does not exceed 106.

第一行包含一个非空的数字字符串。该字符串的长度不超过 $10^6$。

Output the restored expression. If there are several solutions, you can print any of them.

Note that the answer at first should contain two terms (divided with symbol '+'), and then the result of their addition, before which symbol'=' should be.

Do not separate numbers and operation signs with spaces. Strictly follow the output format given in the examples.

If you remove symbol '+' and symbol '=' from answer string you should get a string, same as string from the input data.

输出恢复后的表达式。如果存在多个解，输出任意一个即可。

注意：答案最开始应包含两个项（用符号 + 分隔），然后是它们相加的结果，结果前需加上符号 =。

数字与运算符之间不得添加空格。请严格遵循示例中给出的输出格式。

如果从答案字符串中移除符号 + 和符号 =，所得字符串应与输入数据中的字符串完全相同。