trait Fun{
    fn fun(&self, y : i32);
}

impl Fun for Option<(i32,i32)> {
    fn fun(&self, y : i32) {
        if let Some((param1,param2)) = self {
            println!("{} {} {}",param1,param2,y);
        }
    }
}


fn main(){
    let a = Some((1,2));
    let b = None;
    a.fun(5);
    b.fun(6);

}