Problem Statement

You are given a (+-) expression $S$.
Evaluate it.
Here, a (+-) expression is an expression that satisfies the following conditions.

・It consists only of '+', '-', '(', ')', and the digits '0' to '9'.
・'(' and ')' correspond one-to-one, and parentheses are nested at most one level deep.
　That is, '(' and ')' appear the same number of times, and after a '(', another '(' never appears before a ')' comes.
・Two or more digits never appear consecutively.
・Two or more signs never appear consecutively.

"4-(2-1)" satisfies the conditions and is therefore a (+-) expression, but "4*2-1/1", "4.2+3", "(7-(7+7))", "77+7", and "4+-3" are not.　

Input

$S$

The input consists of one line,
in which $S(1 \leq |S| \leq 100)$ representing the problem
is given.

Output

Output the result of the calculation. Insert a newline at the end.

Sample

3+4-2

5

3-(1-1)

3

1-(2-1)+(2+2)-3

1