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## Statement

The program:

You are given an expression comprised of integers separated by operators, as well as the result of the expression preceded by an equals symbol =.

However, some of the digits in the expression have been replaced by question marks ?.

You must restore the missing digits to the expression in such a way that it stays correct.

The digits to the right of the equals sign = will never be replaced by question marks ? .

Each expression can have several operators, but

However, some of the digits in the expression have been replaced by question marks ?.

You must restore the missing digits to the expression in such a way that it stays correct.

The digits to the right of the equals sign = will never be replaced by question marks ? .

Each expression can have several operators, but

**of the same type only**.**INPUT:**

**A single line**expression containing positive integers, and the operators +, -, *, / and the = sign. Some digits will be replaced by ? characters. Each number and symbol is separated by a space.

**OUTPUT:**

The same expression with each ? replaced with the proper digit for the expression to be true.

**CONSTRAINTS:**

expression contains less than 256 characters.

**EXAMPLE:**

**Input**

1? + 18 = 29

**Output**

11 + 18 = 29

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