Description

Calculate $a \times b$

Format

Input

Input contains multiple test cases. Each test case contains two number $a$ and $b$ $(0 \leq a,b \leq 10^{1000})$,

Output

Output $a \times b$

Samples

12345678987654321 98765432123456789

1219326320073159566072245112635269

#Hints 练习模拟大数乘法