Initially, there are \(\textbf{K}\) number of almonds in the bowl. Alice eats \(\textbf{A }\) almonds in the morning and \(\textbf{B}\) number of almonds is added to her bowl in the evening. You need to determine the number of consecutive days for which Alice will be able to eat almonds.

Input Format:
The first line of the input contains an integer T,the number of test cases.
Each test case is described by 3 lines,having the integers A, B and K respectively.

Output Format:

Output the answer for each test case in a new line.
If the activity can go on forever,print -1.

Input Constraints:

• \(1 \le T \le 5 \)
• \(0 \le A \le 10^9 \)
• \(0 \le B \le 10^9 \)
• \(0 \le K \le 10^9 \)