Division of Big Integers

Given two integers $A$ and $B$, compute the quotient, $\frac{A}{B}$. Round down to the nearest decimal.

Input

Two integers $A$ and $B$ separated by a space character are given in a line.

Output

Print the quotient in a line.

Constraints

• $-1 \times 10^{1000} \leq A, B \leq 10^{1000}$
• $B \ne 0$

Sample Input 1

5 8

Sample Output 1

0

Sample Input 2

100 25

Sample Output 2

4

Sample Input 3

-1 3

Sample Output 3

0

Sample Input 4

12 -3

Sample Output 4

-4

Example

Input

5 8

Output

0

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