Care of Puppy

package main
import (
  "fmt"
  "strconv"
)

func main() {
    var foodInKilograms int
    fmt.Scanln(&foodInKilograms)

    availableFoodInGrams := foodInKilograms * 1000

    var command string
    fmt.Scanln(&command)

    for command != "Adopted" {
        foodEaten, _ := strconv.Atoi(command)
        availableFoodInGrams -= foodEaten
        fmt.Scanln(&command)
    }

    if availableFoodInGrams >= 0 {
        fmt.Printf("Food is enough! Leftovers: %d grams.", availableFoodInGrams)
    } else {
        fmt.Printf("Food is not enough. You need %d grams more.", availableFoodInGrams * -1)
    }
}