package main

import (
        "fmt"
        "math"
)

func main() {
        var N int
        fmt.Scan(&N)
        X := 0.0
        for N != 0 {
                N--
                var a int64
                fmt.Scan(&a)
                if a%2 == 0 {
                        X--
                } else {
                        X++
                }
        }
        fmt.Printf("%v\n", math.Abs(X))
}