Plus or Minus

Description:

Input:

The first line contains a single integer $$$t$$$ ($$$1 \leq t \leq 162$$$) — the number of test cases.

The description of each test case consists of three integers $$$a$$$, $$$b$$$, $$$c$$$ ($$$1 \leq a, b \leq 9$$$, $$$-8 \leq c \leq 18$$$). The additional constraint on the input: it will be generated so that exactly one of the two equations will be true.

Output:

For each test case, output either + or - on a new line, representing the correct equation.

Sample Input:

11
1 2 3
3 2 1
2 9 -7
3 4 7
1 1 2
1 1 0
3 3 6
9 9 18
9 9 0
1 9 -8
1 9 10

Sample Output:

+
-
-
+
+
-
+
+
-
-
+

Note:

In the first test case, $$$1+2=3$$$.

In the second test case, $$$3-2=1$$$.

In the third test case, $$$2-9=-7$$$. Note that $$$c$$$ can be negative.