package main

func main() {
    var tx, ty, tr int
    var total = -9999999999
    for x := 0; x < 300; x++ {
        println(x)
        for y := 0; y < 300; y++ {
            for f := 1; f < 30; f++ {
                var r = 0
                for x1 := x; x1 < x+f; x1++ {
                    for y1 := y; y1 < y+f; y1++ {
                        r += calcPowerLevel(x1, y1, 7689)
                    }
                }
                if r > total {
                    total = r
                    tr = f
                    tx = x
                    ty = y
                }
            }
        }
    }

    println(tx, ty, tr, total)
}

func calcPowerLevel(x, y, serial int) int {
    rackId := x + 10
    power := rackId * y
    power += serial
    power *= rackId
    hundr := (power / 100) % 10
    hundr -= 5
    return hundr
}