package fixjava;

public class StringUtils {

	/** Repeat the given string the requested number of times. */
	public static String repeat(String str, int numTimes) {
		StringBuilder buf = new StringBuilder(Math.max(0, str.length() * numTimes));
		for (int i = 0; i < numTimes; i++)
			buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the left hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padLeft(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(padChar);
		for (int i = 1, mi = bufSize - str.length(); i < mi; i++)
			buf.append(padChar);
		buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the right hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padRight(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(str);
		buf.append(padChar);
		while (buf.length() < bufSize)
			buf.append(padChar);
		return buf.toString();
	}

	/** Intern all strings in an array, skipping null elements. */
	public static String[] intern(String[] arr) {
		for (int i = 0; i < arr.length; i++)
			arr[i] = arr[i].intern();
		return arr;
	}

	/** Intern a string, ignoring null */
	public static String intern(String str) {
		return str == null ? null : str.intern();
	}

}

import java.io.IOException;
import java.math.BigDecimal;
import java.util.Arrays;
import java.util.List;

public class MinimumScalar extends JamProblem {
    public static void main(String[] args) throws IOException {
        MinimumScalar p = new MinimumScalar();
        p.go();
    }
    @Override
    String solveCase(JamCase jamCase) {
        MSCase c= (MSCase) jamCase;
        Arrays.sort(c.a);
        Arrays.sort(c.b);

        BigDecimal b = new BigDecimal(0);
        for (int i=0; i< c.lengh; i++) {
            BigDecimal aaa = new BigDecimal(c.a[i]);
            BigDecimal bbb = new BigDecimal(c.b[c.lengh - i - 1]);
            b = b.add(aaa.multiply(bbb));
        }
        return "" + b;
    }

    @Override
    JamCase parseCase(List<String> file, int line) {
        MSCase c= new MSCase();
        c.lineCount=3;
        int i = line;
        c.lengh = Integer.parseInt(file.get(i++));
        c.a = JamUtil.parseIntList(file.get(i++),c.lengh);
        c.b = JamUtil.parseIntList(file.get(i++),c.lengh);
        return c;
    }
}

class MSCase extends JamCase {
    int lengh;
    int[] a;
    int[] b;
}

