Summer Shopping

package main

import "fmt"

func main() {
    var budget, towel, discount float64
    fmt.Scanln(&budget)
    fmt.Scanln(&towel)
    fmt.Scanln(&discount)

    umbrella := towel / 3 * 2
    flipFlops := umbrella * 0.75
    beachBag := (towel + flipFlops) / 3
    sum:= (towel + umbrella + flipFlops + beachBag) * (100 - discount) / 100

    fmt.Printf("Annie's sum is %.2f lv. ", sum)
    if budget >= sum {
        fmt.Printf("She has %.2f lv. left.", budget - sum)
    } else {
        fmt.Printf("She needs %.2f lv. more.", sum - budget)
    }
}