22193번 - Multiply 서브태스크다국어

Write a program that computes a product of two non-negative integers A and B. The integers are represented in decimal notation and have N and M digits, respectively.

The first line contains the lengths N and M, separated by a space. A is given on the second and B on the third line. The numbers will not have leading zeros.

Output the product of A and B without leading zeros.

• 1 ≤ N, M ≤ 50 000