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## lcm
## **WARNING! VERY IMPORTANT!**
For this exercise a function will be tested **with the exam own main**. However the student **still needs** to submit a structured program:
This means that:
- The package needs to be named `package main`.
- The submitted code needs one declared function main(```func main()```) even if empty.
- The function main declared needs to **also pass** the `Restrictions Checker`(illegal functions tester). It is advised for the student to just empty the function main after its own testings are done.
- Every other rules are obviously the same than for a `program`.
### Instructions
Write a function, `lcm`, that returns least common multiple.
It will be tested with positive `int` values and `0`.
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### Expected function
```go
func Lcm(first, second int) int {
}
```
### Usage
Here is a possible program to test your function :
```go
package main
func main() {
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fmt.Println(Lcm(2, 7))
fmt.Println(Lcm(0, 4))
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}
```
### Output
```console
student@ubuntu:~/[[ROOT]]/test$ go build
student@ubuntu:~/[[ROOT]]/test$ ./test
14
0
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student@ubuntu:~/[[ROOT]]/test$
```