Excursion

package main

import "fmt"

func main() {
    var people, nights, cards, tickets int
    fmt.Scanln(&people)
    fmt.Scanln(&nights)
    fmt.Scanln(&cards)
    fmt.Scanln(&tickets)

    total := (20.00 * float64(nights) + 1.60 * float64(cards) + 6.00 * float64(tickets)) * float64(people) * 1.25

    fmt.Printf("%.2f\n", total)
}