04. Supplies for School

package main
import "fmt"

func main() {
    var penPrice = 5.80
    var markerPrice = 7.20
    var detergentPrice = 1.20

    var penCount, markerCount, detergentCount, discount float64
    fmt.Scanln(&penCount)
    fmt.Scanln(&markerCount)
    fmt.Scanln(&detergentCount)
    fmt.Scanln(&discount)

    var totalPrice = (1 - discount / 100) * (penCount * penPrice + markerCount * markerPrice + detergentCount * detergentPrice)

    fmt.Println(totalPrice)
}