Give CashBack :
Difficulty Level : Medium
Submissions : 1000
Asked In :
Marks :10
: 13 | : 1
An E-commerce company is planning to give cash back. For an order with order ID $$$P$$$ of amount $$$Q$$$, it gives cash back equal to the number of operations needed to make P equal to Q. The allowed operations are:
1) $$$P=P+P$$$
2) $$$P=P-P$$$
3) $$$P=P*P$$$
4) $$$P = P/P$$$
If such a transformation is not possible, then output $$$-1$$$.
Input
First line contains number of test cases $$$T$$$, $$$1 \le T \le 10^5$$$
Next $$$T$$$ lines contain two integers $$$P$$$ and $$$Q$$$ , $$$1 \le P,Q \le 10^9$$$
Output
For each test case output the minimum number of operations needed to make $$$P$$$ equal to $$$Q$$$ , if that is not possible output $$$-1$$$
Example
Input
51 22 15 35 1009 9
Output
1 1 -1 2 0
