Wedding Party

package main

import (
    "fmt"
    "math"
)

func main() {
    var guests, budget int
    fmt.Scanln(&guests)
    fmt.Scanln(&budget)

    budget -= guests * 20

    if (budget < 0) {
        fmt.Printf("They won't have enough money to pay the covert. They will need %d lv more.", budget * -1)
    } else {
        fmt.Printf("Yes! %d lv are for fireworks and %d lv are for donation.",
                    int(math.Round(0.40 * float64(budget))), int(math.Round(0.60 * float64(budget))))
    }
}