Simple expression#10913

Simple expression

1 second
128 megabytes
Very easy

Given three real numbers , , (-10^{18} \leq x, y, z \leq 10^{18}).Print the value of expression x + y \cdot z.

Input

Contains three lines: the first line contains number , the second line contains number , the third line contains number .

Output

Print the value of expression x + y \cdot z.

Examples

Example 1

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Example 2

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