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C. Eval

time limit per test

2 secondsmemory limit per test

256 megabytesinput

standard inputoutput

standard outputYou are given a simple arithmetic expression of the form *a*?*b*, where *a* and *b* are integer constants, and ? can be one of the following operations: '+' (addition), '-' (subtraction), '*' (multiplication), '/' (integer division) or '%' (modulo operation).

Output the result of evaluation of this expression.

Input

The input is a single line containing an expression *a*?*b*. Here *a* and *b* are integers between 1 and 999, inclusive; ? is an operation character: '+', '-' (ASCII code 45), '*', '/' or '%'.

Output

Output a single integer — the result of evaluation of this expression.

Examples

Input

123+456

Output

579

Input

192/5

Output

38

Input

945%19

Output

14

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