package main

import (
    "fmt"
    "strings"
)

type I interface {
    Haha() string
    Hoho() string
}

type Nhehe struct {
    N int
}

func NewNhehe(n int) Nhehe {
    return Nhehe{
        N: n,
    }
}

func (n Nhehe) Haha() string {
    return strings.Repeat("haha", n.N)
}

func (n Nhehe) Hoho() string {
    return strings.Repeat("hoho", n.N)
}

type TwoHehe struct{}

func (n TwoHehe) Haha() string {
    return "hahahaha"
}

func (n TwoHehe) Hoho() string {
    return "hohohoho"
}

func  DoHahaHoho(haho I) {
    fmt.Println(haho.Haha())
    fmt.Println(haho.Hoho())
    fmt.Println()
}

func main() {
    DoHahaHoho(NewNhehe(3))
    DoHahaHoho(TwoHehe{})
}