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];
        for(int i=0;i<n;i++){v[i] = sc.nextInt();
                            }
        for(int i=0;i<n;i++){c[i] = sc.nextInt();
                            }
        int ans = 0;
        for(int i=0;i<n;i++){ans+=Math.max(0,v[i]-c[i]);
                            }
        System.out.println(ans);
  }
} 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];
        for(int i=0;i<n;i++){v[i] = sc.nextInt();
                            }
        for(int i=0;i<n;i++){c[i] = sc.nextInt();
                            }
        int ans = 0;
        for(int i=0;i<n;i++){ans+=Math.max(0,v[i]-c[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];
        for(int i=0;i<n;i++){v[i] = sc.nextInt();
                            }
        for(int i=0;i<n;i++){c[i] = sc.nextInt();
                            }
        int ans = 0;
        for(int i=0;i<n;i++){ans+=Math.max(0,v[i]-c[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];
        for(int i=0;i<n;i++){v[i] = sc.nextInt();
                            }
        for(int i=0;i<n;i++){c[i] = sc.nextInt();
                            }
        int ans = 0;
        for(int i=0;i<n;i++){ans+=Math.max(0,v[i]-c[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 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 int ans = 0; ans 0 for(int i=0;i<n;i++){ans+=Math.max(0,v[i]-c[i]);
                            } int i=0; int i=0; i 0 i<n i n i++ i++ i {ans+=Math.max(0,v[i]-c[i]);
                            } {ans+=Math.max(0,v[i]-c[i]);
                            } ans+=Math.max(0,v[i]-c[i]) ans Math.max(0,v[i]-c[i]) Math.max Math 0 v[i]-c[i] v[i] v i c[i] c 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];
        for(int i=0;i<n;i++){v[i] = sc.nextInt();
                            }
        for(int i=0;i<n;i++){c[i] = sc.nextInt();
                            }
        int ans = 0;
        for(int i=0;i<n;i++){ans+=Math.max(0,v[i]-c[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];
        for(int i=0;i<n;i++){v[i] = sc.nextInt();
                            }
        for(int i=0;i<n;i++){c[i] = sc.nextInt();
                            }
        int ans = 0;
        for(int i=0;i<n;i++){ans+=Math.max(0,v[i]-c[i]);
                            }
        System.out.println(ans);
  }
} 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];
        for(int i=0;i<n;i++){v[i] = sc.nextInt();
                            }
        for(int i=0;i<n;i++){c[i] = sc.nextInt();
                            }
        int ans = 0;
        for(int i=0;i<n;i++){ans+=Math.max(0,v[i]-c[i]);
                            }
        System.out.println(ans);
  }
}
