Problem Description
The lengths of two sides of a rectangle are given. It is required to calculate its area.
Input format
The input data contain two natural numbers --- the lengths of the sides of the rectangle, not exceeding and separated by a space.
Output format
Output one integer --- the area of the rectangle.
Examples
Example 1
Input
3 5
Output
15
Example 2
Input
1000000000 1000000000
Output
1000000000000000000