import java.util.*;
public class Main {
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int N=Integer.parseInt(sc.next());
int[] A=new int[N];
for(int i=0;i<N;i++){
A[i]=Integer.parseInt(sc.next());
}
Arrays.sort(A);
int max=A[N-1]-A[0];
System.out.println(max);

}
} import java.util.*; util.* java public class Main {
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int N=Integer.parseInt(sc.next());
int[] A=new int[N];
for(int i=0;i<N;i++){
A[i]=Integer.parseInt(sc.next());
}
Arrays.sort(A);
int max=A[N-1]-A[0];
System.out.println(max);

}
} Main public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int N=Integer.parseInt(sc.next());
int[] A=new int[N];
for(int i=0;i<N;i++){
A[i]=Integer.parseInt(sc.next());
}
Arrays.sort(A);
int max=A[N-1]-A[0];
System.out.println(max);

} main {
Scanner sc = new Scanner(System.in);
int N=Integer.parseInt(sc.next());
int[] A=new int[N];
for(int i=0;i<N;i++){
A[i]=Integer.parseInt(sc.next());
}
Arrays.sort(A);
int max=A[N-1]-A[0];
System.out.println(max);

} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N=Integer.parseInt(sc.next()); N Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int[] A=new int[N]; A new int[N] N for(int i=0;i<N;i++){
A[i]=Integer.parseInt(sc.next());
} int i=0; int i=0; i 0 i<N i N i++ i++ i {
A[i]=Integer.parseInt(sc.next());
} {
A[i]=Integer.parseInt(sc.next());
} A[i]=Integer.parseInt(sc.next()) A[i] A i Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc Arrays.sort(A) Arrays.sort Arrays A int max=A[N-1]-A[0]; max A[N-1]-A[0] A[N-1] A N-1 N 1 A[0] A 0 System.out.println(max) System.out.println System.out System System.out max String[] args args public class Main {
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int N=Integer.parseInt(sc.next());
int[] A=new int[N];
for(int i=0;i<N;i++){
A[i]=Integer.parseInt(sc.next());
}
Arrays.sort(A);
int max=A[N-1]-A[0];
System.out.println(max);

}
} public class Main {
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int N=Integer.parseInt(sc.next());
int[] A=new int[N];
for(int i=0;i<N;i++){
A[i]=Integer.parseInt(sc.next());
}
Arrays.sort(A);
int max=A[N-1]-A[0];
System.out.println(max);

}
} Main
import java.util.*;
public class Main {
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int N=Integer.parseInt(sc.next());
int[] A=new int[N];
for(int i=0;i<N;i++){
A[i]=Integer.parseInt(sc.next());
}
Arrays.sort(A);
int max=A[N-1]-A[0];
System.out.println(max);

}
}