package main

import (
        "bufio"
        "fmt"
        "math"
        "os"
        "strconv"
)

func main() {
        N := nextInt()
        X := 0
        for N != 0 {
                N--
                a := nextInt()
                if a%2 == 0 {
                        X--
                } else {
                        X++
                }
        }
        fmt.Printf("%v\n", math.Abs(float64(X)))
}

var sc = bufio.NewScanner(os.Stdin)

func nextInt() int {
        sc.Split(bufio.ScanWords)
        sc.Scan()
        i, e := strconv.Atoi(sc.Text())
        if e != nil {
                panic(e)
        }
        return i
}