import java.util.Scanner
fun main()
{   var n1 = 0; var n2 = 1; var maxSeq:Int; var seq: Int
    do
    { print("Enter a valid value for n: ") //n of sequence
        val reader = Scanner(System.`in`)
        val n:Int = reader.nextInt()
        maxSeq = n
    }while(n <= 0)

    while(maxSeq > 0)
    {   seq = n1 + n2
        println(seq)
        //update value of n1 and n2
        n1 = n2
        n2 = seq
        maxSeq--    }
}