문제1400--Cow Multiplication

1400: Cow Multiplication

실행시간 제한: 1 Sec  메모리사용 제한: 64 MB
제출: 157  통과: 125
[제출] [채점기록] [묻고답하기]

문제 설명

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.

입력 설명

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

출력 설명

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

입력 예시 Copy

123 45

출력 예시 Copy

54

출처/분류