package main

// exercise link: https://go.dev/tour/moretypes/18

import (
// "golang.org/x/tour/pic" // not valid on local!
)

func Pic(dx, dy int) [][]uint8 {
	mypic := make([][]uint8, dx)
	for i := range mypic {
		mypic[i] = make([]uint8, dy)
	}
	for i, _ := range mypic {
		for j, _ := range mypic[i] {
			mypic[i][j] = uint8((i*dy + j*3) % 256)
		}
	}
	return mypic
}

func main() {
	// pic.Show(Pic)
}