QQ solver

题目描述

You are given a $3$-character string $S$, which is a concatenation of integers $a$ and $b$ between $1$ and $9$ (inclusive) and the character $x$ in this order: $axb$. Find the product of $a$ and $b$.

输入格式

Input is given from Standard Input in the following format: $S$

输出格式

Print the answer.

3x7

21

9x9

81

1x1

1

提示

The length of $S$ is $3$. The $1$-st and $3$-rd characters are digits between $1$ and $9$ (inclusive). The $2$-nd character is $x$.We have $3 \times 7 = 21$, which should be printed.

标签: AtCoder|abc232A

来源

AtCoder|abc232A