Christmas Preparation

package main

import "fmt"

func main() {
    const paperPrice = 5.80
    const clothPrice = 7.20
    const gluePrice = 1.20

    var papers, cloths, glues, discount float64
    fmt.Scanln(&papers)
    fmt.Scanln(&cloths)
    fmt.Scanln(&glues)
    fmt.Scanln(&discount)

    totalPrice := (paperPrice * papers + clothPrice * cloths + gluePrice * glues) * (1.0 - discount / 100)

    fmt.Printf("%.3f\n", totalPrice)
}