package main

import(
  "fmt"
  "strings"
  "bufio"
  "os"
  "strconv"
  "math"
)

func main(){
  scanner := bufio.NewScanner(os.Stdin)
  scanner.Scan()
  line := scanner.Text()
  s := strings.Fields(line)


  for ix := len(s) - 1; ix >= 0; ix--{
    i, _ := strconv.Atoi(s[ix])
    x := fmt.Sprintf("%.4f", math.Sqrt(float64(i)))
    fmt.Println(x)
  }
}