import java.util.*;
import java.io.*;

class hw8410 {

public static void main(String args[]) {

Scanner in = new Scanner(System.in);
int numElements = Integer.parseInt(args[0]);

try { //this is the try block that I don't know where to place

if (numElements <= 0) {
System.out.println("Array size must be positive");
System.exit(0);
}

} catch (NumberFormatException e) { //and the catch that follows
System.out.println("Please enter an integer for the Command Line Parameter!");
System.exit(0);
}

double[] array1 = new double[numElements];
double[] array2 = new double[numElements];

try {

for (int i = 0; i < array1.length; i++) {
System.out.println("Please enter a double for array1[" + i + "] and one for array2[" + i + "]:");
array1[i] = in.nextInt();
array2[i] = in.nextInt();
}

} catch (InputMismatchException e) {
System.out.println("Please enter double values!");
System.exit(0);
}

System.out.println("Array1 max: <" + maxArray(array1) + ">, Array2 max: <" + maxArray(array2) + ">.");
sumDiffArrays(array1, array2);

}

static double maxArray(double array[]) {
double max = 0;
for (int i = 0; i < array.length; i++) {
if (max < array[i]) {
max = array[i];
}
}
return max;
}

static void sumDiffArrays(double array3[], double array4[]) {
double diff = 0;
double sum = 0;
for (int i = 0; i < array3.length; i++) {
diff = ((array3[i]) - (array4[i]));
sum += diff;
}
System.out.println(sum);
}
}