#include <bits/stdc++.h>
using namespace std;
 
#define S second
#define F first
#define LL long long 
#define LINF 100000000000000000
#define INF 1000000000
 
const int N = 4e5+10;
const LL MOD = 1e9+7;

LL gcd(LL a,LL b){return !b?a:gcd(b,a%b);}

string f(int c,int k){

    string ret = "";
    for(int i=c;i<k;i++)
        ret += i+'a',ret += c+'a';

    return ret;
}

int main()
{      
    //freopen("out.txt","w",stdout);
    int n;
    scanf("%d",&n);

    LL sum[] = {0,0};
    for(int j=0;j<2;j++)
        for(int i=1;i<=n;i++){
            int x;cin>>x;
            sum[j] += 0ll+x;
        }

    printf("%lld\n",sum[0]-sum[1]);
}