#include<iostream>
#include<cmath>
using namespace std;

int diff(int arr[], int size)
{
	int oddsum=0, evensum=0;
	for(int i=0; i<size; i++)	//iterate through the array
	{
		if(arr[i]%2 ==0)	//if even, accumulate into evensum
			evensum += arr[i];
		else	oddsum += arr[i];	//otherwise accumulate into oddsum
	}
	return abs(oddsum - evensum);
}

int main()
{
	int array[20];
	cout<<"Enter 20 integers:"<<endl;
	for(int i=0; i<20; i++)
		cin>>array[i];

	cout<<"The difference between the odd sum and the even sum is "<<diff(array, 20)<<endl;
	
	return 0;
}