package main
import (
"bufio"
"fmt"
"os"
"strconv"
)
func main() {
scanner := bufio.NewScanner(os.Stdin)
fsCount := 0
othersSum := 0
othersSumCount := 0
//按行处理
for scanner.Scan() {
input := scanner.Text()
if input == "" {
break
}
num, err := strconv.Atoi(input)
if err != nil {
return
}
if num < 0 {
fsCount++
} else {
othersSum += num
othersSumCount++
}
}
//输出
fmt.Println(fsCount)
if othersSumCount == 0 {
fmt.Println("0.0")
} else {
fmt.Println(fmt.Sprintf("%.1f", float64(othersSum)/float64(othersSumCount)))
}
}