package main

import (
    "fmt"
    "io"
    "os"
)

var stdin io.Reader = os.Stdin
var stdout io.Writer = os.Stdout
var stderr io.Writer = os.Stderr

func main() {
    var n int
    fmt.Fscanf(stdin, "%d", &n)
    var positive, negative, zeros float64
    for i := 0; i < n; i++ {
        var x int
        fmt.Fscanf(stdin, "%d", &x)
        if x > 0 {
            positive++
        } else if x == 0 {
            zeros++
        } else {
            negative++
        }
    }
    nf := float64(n)
    fmt.Fprintf(stdout, "%.6f\n%.6f\n%.6f\n", positive/nf, negative/nf, zeros/nf)
}