import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] v = new int[N];
		int[] c = new int[N];
		int count=0;
		
		for(int i=0;i<N;i++) {
			v[i]=sc.nextInt();
		}
		for(int i=0;i<N;i++) {
			c[i]=sc.nextInt();
		}
		
		for(int i=0;i<N;i++) {
			if(v[i]-c[i]>=1) {
				count+=v[i]-c[i];
			}
		}
		System.out.println(count);
		sc.close();
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] v = new int[N];
		int[] c = new int[N];
		int count=0;
		
		for(int i=0;i<N;i++) {
			v[i]=sc.nextInt();
		}
		for(int i=0;i<N;i++) {
			c[i]=sc.nextInt();
		}
		
		for(int i=0;i<N;i++) {
			if(v[i]-c[i]>=1) {
				count+=v[i]-c[i];
			}
		}
		System.out.println(count);
		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] v = new int[N];
		int[] c = new int[N];
		int count=0;
		
		for(int i=0;i<N;i++) {
			v[i]=sc.nextInt();
		}
		for(int i=0;i<N;i++) {
			c[i]=sc.nextInt();
		}
		
		for(int i=0;i<N;i++) {
			if(v[i]-c[i]>=1) {
				count+=v[i]-c[i];
			}
		}
		System.out.println(count);
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] v = new int[N];
		int[] c = new int[N];
		int count=0;
		
		for(int i=0;i<N;i++) {
			v[i]=sc.nextInt();
		}
		for(int i=0;i<N;i++) {
			c[i]=sc.nextInt();
		}
		
		for(int i=0;i<N;i++) {
			if(v[i]-c[i]>=1) {
				count+=v[i]-c[i];
			}
		}
		System.out.println(count);
		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int[] v = new int[N]; v new int[N] N int[] c = new int[N]; c new int[N] N int count=0; count 0 for(int i=0;i<N;i++) {
			v[i]=sc.nextInt();
		} int i=0; int i=0; i 0 i<N i N i++ i++ i {
			v[i]=sc.nextInt();
		} {
			v[i]=sc.nextInt();
		} v[i]=sc.nextInt() v[i] v i sc.nextInt() sc.nextInt sc for(int i=0;i<N;i++) {
			c[i]=sc.nextInt();
		} int i=0; int i=0; i 0 i<N i N i++ i++ i {
			c[i]=sc.nextInt();
		} {
			c[i]=sc.nextInt();
		} c[i]=sc.nextInt() c[i] c i sc.nextInt() sc.nextInt sc for(int i=0;i<N;i++) {
			if(v[i]-c[i]>=1) {
				count+=v[i]-c[i];
			}
		} int i=0; int i=0; i 0 i<N i N i++ i++ i {
			if(v[i]-c[i]>=1) {
				count+=v[i]-c[i];
			}
		} {
			if(v[i]-c[i]>=1) {
				count+=v[i]-c[i];
			}
		} if(v[i]-c[i]>=1) {
				count+=v[i]-c[i];
			} v[i]-c[i]>=1 v[i]-c[i] v[i] v i c[i] c i 1 {
				count+=v[i]-c[i];
			} count+=v[i]-c[i] count v[i]-c[i] v[i] v i c[i] c i System.out.println(count) System.out.println System.out System System.out count sc.close() sc.close sc String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] v = new int[N];
		int[] c = new int[N];
		int count=0;
		
		for(int i=0;i<N;i++) {
			v[i]=sc.nextInt();
		}
		for(int i=0;i<N;i++) {
			c[i]=sc.nextInt();
		}
		
		for(int i=0;i<N;i++) {
			if(v[i]-c[i]>=1) {
				count+=v[i]-c[i];
			}
		}
		System.out.println(count);
		sc.close();
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] v = new int[N];
		int[] c = new int[N];
		int count=0;
		
		for(int i=0;i<N;i++) {
			v[i]=sc.nextInt();
		}
		for(int i=0;i<N;i++) {
			c[i]=sc.nextInt();
		}
		
		for(int i=0;i<N;i++) {
			if(v[i]-c[i]>=1) {
				count+=v[i]-c[i];
			}
		}
		System.out.println(count);
		sc.close();
	}
} Main
import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] v = new int[N];
		int[] c = new int[N];
		int count=0;
		
		for(int i=0;i<N;i++) {
			v[i]=sc.nextInt();
		}
		for(int i=0;i<N;i++) {
			c[i]=sc.nextInt();
		}
		
		for(int i=0;i<N;i++) {
			if(v[i]-c[i]>=1) {
				count+=v[i]-c[i];
			}
		}
		System.out.println(count);
		sc.close();
	}
}
