[https://easylang.online/apps/run.html?bg=000&code=color%2099920099%0Alen%20f%5B%5D%20200%20%2A%202002A200%0Amove%201002050%201002050%0Arect%200.5%200.5%0Af%5B100%20%2A%20200%20%2B2A200%201002B100%5D%20%3D%2013D1%0An%20%3D%2090003D9000%0Awhile%20i%20%3C%20n%0Ax%20%3D%20random3Drandom%20200%0Ay%20%3D%20random3Drandom%20200%0Awhile%20f%5By%202A200%2A%20200%20%2B%20x2Bx%5D%20%3D%2013D1%0Ax%20%3D%20random3Drandom%20200%0Ay%20%3D%20random3Drandom%20200%0A.%0Awhile%20x%20%3C%3E%20-1%0Axo%20%3D%20x3Dx%0Ayo%20%3D%20y3Dy%0Ax%20%2B%3D%20random3Drandom%203%20-%2011%0Ay%20%2B%3D%20random3Drandom%203%20-%2011%0Aif%20x%20%3C%200%20or%20y%20%3C%200%20or%20x%20%3E%3D%20200%20or%20y%20%3E%3D%20200%0Ax%20%3D%20-1%0Aelse%0Aif%20f%5By%202A200%2A%20200%20%2B%20x2Bx%5D%20%3D%2013D1%0Amove%20xo%20/%2022%20yo%20/%2022%0Arect%200.5%200.5%0Af%5Byo%202A200%2A%20200%20%2B%20xo2Bxo%5D%20%3D%2013D1%0Ai%20%2B%3D%2013D1%0Aif%20i%20mod%2016%20%3D%2003D0%0Acolor_red%200.2%20%2B%20i%202Bi/%20nn%0Asleep%200%0A.%0Ax%20%3D%20-1%0A.%0A.%0A.%0A. Run it]