Simple Calculator

MediumGrade 10

Read two integers and an operator (+, -, *, or /), and print the result. Division should be whole-number division.

Input / Output

Input: line 1 has two integers "a b", line 2 has a single operator character. Output: the result of a (operator) b.

Examples

Input

6 3
+

Expected Output

9

Input

10 4
*

Expected Output

40

+ 2 hidden tests checked on Submit.

Files

Main.pas is the entry point. Add extra units for OOP exercises — they compile together.

Main.pas
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