Gold Mine

package main
import "fmt"

func main() {
    var locations, dayDigging int
    fmt.Scanln(&locations)

    var averageGold, gold float64

    for i := 0; i < locations; i++ {
        fmt.Scanln(&averageGold)
        fmt.Scanln(&dayDigging)
        goldSum := 0.0
        for j := 0; j < dayDigging; j++ {
            fmt.Scanln(&gold)
            goldSum += gold
        }

        if goldSum / float64(dayDigging) >= averageGold {
            fmt.Printf("Good job! Average gold per day: %.2f.\n", goldSum / float64(dayDigging))
        } else {
            fmt.Printf("You need %.2f gold.\n", averageGold - (goldSum / float64(dayDigging)))
        }
    }
}