102 1 s 64 MB

Bessie is tired of multiplying pairs of numbers the usual way, so she invented her own style of multiplication. In her style, *A***B* is equal to the sum of all possible pairwise products between the digits of *A* and *B*. For example, the product 123*45 is equal to 1*4 + 1*5 + 2*4 + 2*5 + 3*4 + 3*5 = 54. Given two integers A and B (1 ≤ A, B ≤ 1,000,000,000), determine A*B in Bessie's style of multiplication.

* Line 1: Two space-separated integers: *A* and *B*.

* Line 1: A single line that is the A*B in Bessie's style of multiplication.

## Sample Input | ## Sample Output |
---|---|

123 45 | 54 |