## nauuo

### Instructions

There was a vote. There are people who voted positively, negatively, and randomly.
Figure out if the final answer depends on random people or not.
If it does, return '?', otherwise the result must be either '+', '-', or '0'
Previous characters stand for outcome of the vote: positive/negative/draw.
Input is always positive.

Write a function, `Nauuo`, that returns final result of voting.

### Expected function

```go
func Nauuo(plus, minus, rand int) string {

}
```

### Usage

Here is a possible program to test your function :

```go
package main

import (
	"fmt"
	"piscine"
)

func main() {
	fmt.Println(piscine.Nauuo(50, 43, 20))
	fmt.Println(piscine.Nauuo(13, 13, 0))
	fmt.Println(piscine.Nauuo(10, 9, 0))
	fmt.Println(piscine.Nauuo(5, 9, 2))
}
```

And its output :

```console
$ go run .
?
0
+
-
$
```