package main

import "fmt"

func sum(values []int) int {
    sum := 0
    for _,v := range values {
        sum += v
    }
    return sum
}
func average(values []int) int {
    sum := sum(values)
    size := len(values)
    return sum / size
}
func main() {
    values := []int{1, 2, 3, 4, 5}
    fmt.Println(average(values))
}