858_A. k-rounding
For a given positive integer n denote its k-rounding as the minimum positive integer x, such that x ends with k or more zeros in base 10 and is divisible by n.

For example, 4-rounding of 375 is 375·80 = 30000. 30000 is the minimum integer such that it ends with 4 or more zeros and is divisible by 375.

Write a program that will perform the k-rounding of n.

Input

The only line contains two integers n and k (1 ≤ n ≤ 109, 0 ≤ k ≤ 8).

Output

Print the k-rounding of n.

Examples

Input

375 4


Output

30000


Input

10000 1


Output

10000


Input

38101 0


Output

38101


Input

123456789 8


Output

12345678900000000
```python
def nok(a, b):
    c = a*b
    while (a!=0) and (b!=0):
        if a>b: a%=b;
        else: b%=a;
    return c//(a+b);

nk = input().split()
n, k = int(nk[0]), int(nk[1])
print (nok(10**k, n))
```