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## printifnot
### Instructions
Write a function that takes a `string` as an argument and returns the letter `G` if the argument length is less than 3, otherwise returns `Invalid Input` followed by a newline `\n`.
- If it's an empty string return `G` followed by a newline `\n`.
### Expected function
```go
func PrintIfNot(str string) string {
}
```
### Usage
Here is a possible program to test your function:
```go
package main
import (
"fmt"
)
func main() {
fmt.Print(PrintIfNot("abcdefz"))
fmt.Print(PrintIfNot("abc"))
fmt.Print(PrintIfNot(""))
fmt.Print(PrintIfNot("14"))
}
```
And its output:
```console
$ go run . | cat -e
Invalid Input$
Invalid Input$
G$
G$
```