import java.util.Scanner;
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 []a = new int [n];
		
		for(int i = 0; i < n;i++) {
			v[i] = sc.nextInt();
		}
		for(int j = 0; j < n; j++) {
			c[j] = sc.nextInt();
			a[j] = v[j] - c[j];
		}		
		int ans = 0;
		for(int i = 0; i < n ; i++) {
			if (a[i] >= 0) {
				ans += a[i];
			}
				
		}
		System.out.println(ans);
	

	}

} import java.util.Scanner; Scanner 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 []a = new int [n];
		
		for(int i = 0; i < n;i++) {
			v[i] = sc.nextInt();
		}
		for(int j = 0; j < n; j++) {
			c[j] = sc.nextInt();
			a[j] = v[j] - c[j];
		}		
		int ans = 0;
		for(int i = 0; i < n ; i++) {
			if (a[i] >= 0) {
				ans += a[i];
			}
				
		}
		System.out.println(ans);
	

	}

} 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 []a = new int [n];
		
		for(int i = 0; i < n;i++) {
			v[i] = sc.nextInt();
		}
		for(int j = 0; j < n; j++) {
			c[j] = sc.nextInt();
			a[j] = v[j] - c[j];
		}		
		int ans = 0;
		for(int i = 0; i < n ; i++) {
			if (a[i] >= 0) {
				ans += a[i];
			}
				
		}
		System.out.println(ans);
	

	} main {
      
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
		int []v = new int [n];
		int []c = new int [n];
		int []a = new int [n];
		
		for(int i = 0; i < n;i++) {
			v[i] = sc.nextInt();
		}
		for(int j = 0; j < n; j++) {
			c[j] = sc.nextInt();
			a[j] = v[j] - c[j];
		}		
		int ans = 0;
		for(int i = 0; i < n ; i++) {
			if (a[i] >= 0) {
				ans += a[i];
			}
				
		}
		System.out.println(ans);
	

	} 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 []a = new int [n]; a new int [n] n 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 j = 0; j < n; j++) {
			c[j] = sc.nextInt();
			a[j] = v[j] - c[j];
		} int j = 0; int j = 0; j 0 j < n j n j++ j++ j {
			c[j] = sc.nextInt();
			a[j] = v[j] - c[j];
		} {
			c[j] = sc.nextInt();
			a[j] = v[j] - c[j];
		} c[j] = sc.nextInt() c[j] c j sc.nextInt() sc.nextInt sc a[j] = v[j] - c[j] a[j] a j v[j] - c[j] v[j] v j c[j] c j int ans = 0; ans 0 for(int i = 0; i < n ; i++) {
			if (a[i] >= 0) {
				ans += a[i];
			}
				
		} int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
			if (a[i] >= 0) {
				ans += a[i];
			}
				
		} {
			if (a[i] >= 0) {
				ans += a[i];
			}
				
		} if (a[i] >= 0) {
				ans += a[i];
			} a[i] >= 0 a[i] a i 0 {
				ans += a[i];
			} ans += a[i] ans a[i] a i System.out.println(ans) System.out.println System.out System System.out ans 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 []a = new int [n];
		
		for(int i = 0; i < n;i++) {
			v[i] = sc.nextInt();
		}
		for(int j = 0; j < n; j++) {
			c[j] = sc.nextInt();
			a[j] = v[j] - c[j];
		}		
		int ans = 0;
		for(int i = 0; i < n ; i++) {
			if (a[i] >= 0) {
				ans += a[i];
			}
				
		}
		System.out.println(ans);
	

	}

} 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 []a = new int [n];
		
		for(int i = 0; i < n;i++) {
			v[i] = sc.nextInt();
		}
		for(int j = 0; j < n; j++) {
			c[j] = sc.nextInt();
			a[j] = v[j] - c[j];
		}		
		int ans = 0;
		for(int i = 0; i < n ; i++) {
			if (a[i] >= 0) {
				ans += a[i];
			}
				
		}
		System.out.println(ans);
	

	}

} Main
import java.util.Scanner;
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 []a = new int [n];
		
		for(int i = 0; i < n;i++) {
			v[i] = sc.nextInt();
		}
		for(int j = 0; j < n; j++) {
			c[j] = sc.nextInt();
			a[j] = v[j] - c[j];
		}		
		int ans = 0;
		for(int i = 0; i < n ; i++) {
			if (a[i] >= 0) {
				ans += a[i];
			}
				
		}
		System.out.println(ans);
	

	}

}
