A15809 | Plus or Minus
时间限制1s
内存限制256MB
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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.
- $a+b=c$
- $a-b=c$
Output + if the first equation is true, and - otherwise.
输入格式
The first line contains a single integer $t$ ( $1 \leq t \leq 162$ ) — 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.
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.
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
+ - - + + - + + - - +
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.
In the second test case, $3-2=1$ .
In the third test case, $2-9=-7$ . Note that $c$ can be negative.
C++ 编辑器
输入
输出
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评测结果：Accepted