#include <stdio.h>

int main(void) {
	int k[2] = {0},x,n,i,r;
	scanf("%d",&n);
	for(i = 1;i <= n;i++){
		scanf("%d",&x);
		if(x < 0){x*=-1;}
		k[x%2]++;
	}
	r = k[0]-k[1];
	if(r < 0){r*=-1;}
	printf("%d\n",r);
	return 0;
}