Untitled

var code = URL.createObjectURL( new Blob([ '(',
function(){
    function sweep_step (x, y, step) {
        var total = ""
        for(var i=0,j=step; i<y; i++, j--) {
            if(j<0) {
                j=0
            }
            var string = Array(j+1).join("1 ")
            try {
                string += Array((x-j)+1).join("0 ")
            }
            catch (e) {
            }
            total += string.substring(0, x*2)+"<br>"
        }
        return total+"<br>"
    }
    self.addEventListener('message', function(e) {
        self.postMessage([e.data[2],sweep_step(Number(e.data[0]),Number(e.data[1]),Number(e.data[2]))])
    }, false)
}.toString(),')()' ], { type: 'application/javascript' } ) )

function sweep(x,y) {
    let received = 0
    let outputs = Array(x+y-1)
    let workers = []
    for (var i=1; i<=(x+y-1);i++) {
        var worker = new Worker(code)
        workers.push(worker)
        worker.onmessage = function(e) {
            received++
            var j = Number(e.data[0])
            outputs[j-1] = e.data[1]
            if(received==x+y-1) {
                document.write("<html><head><title>OP is a faggot</title></head><body>"+outputs.join("")+"</body></html>")
            }
        }
        worker.postMessage([x,y,i])
    }
}

sweep(50,50)