CF1807A.Plus or Minus
普及/提高-
通过率:0%
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题目描述
You are given three integers a , b , and c such that exactly one of these two equations is true:
- a+b=c
- a−b=c
Output + if the first equation is true, and - otherwise.
输入格式
The first line contains a single integer t ( 1≤t≤162 ) — the number of test cases.
The description of each test case consists of three integers a , b , c ( 1≤a,b≤9 , −8≤c≤18 ). The additional constraint on the input: it will be generated so that exactly one of the two equations will be true.
输出格式
For each test case, output either + or - on a new line, representing the correct equation.
输入输出样例
输入#1
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
输出#1
+ - - + + - + + - - +
说明/提示
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.