package main

import (
	"fmt"
)

func resolve(N int, X []int) int {
	ret := 0

	for i := 0; i < N; i++ {
		switch X[i] % 2 {
		case 0:
			ret += 1
		default:
			ret -= 1
		}
	}
	if ret < 0 {
		ret = -ret
	}

	return ret
}

func main() {
	var N int
	fmt.Scanf("%d\n", &N)

	X := make([]int, N)
	for i := 0; i < N; i++ {
		fmt.Scanf("%d", &X[i])
	}
	fmt.Scanf("\n")

	fmt.Println(resolve(N, X))
}