POJ 2860

#include<iostream>
#define MAXN 20
using namespace std;

int a_1[MAXN];
int a_2[MAXN];

int main()
{
	//freopen("acm.acm","r",stdin);
	int n;
	int m;
	int k;
	int i;
	int sum;
	cin>>n>>m>>k;
	for(i = 0; i < k; ++ i)
	{
		cin>>a_1[i];
	}
	for(i = 0; i < k; ++ i)
	{
		cin>>a_2[i];
	}
	sum = 0;
	for(i = 0; i < k; ++ i)
	{
		sum += abs(a_1[i] - a_2[i]);
	}
	cout<<sum/2<<endl;
}