import java.util.Scanner;

public class Project2 {

	private static Scanner input = new Scanner(System.in);

	private static final int MIN_FIRST = 1;
	private static final int MIN_SECOND = 1;
	private static final int MIN_THIRD = 1;

	private static final int MAX_FIRST = 10000;
	private static final int MAX_SECOND = 12;
	private static final int MAX_THIRD = 4000;

	private static int first;
	private static int second;
	private static int third;

	private static int firstOut;
	private static int secondOut;
	private static String thirdOut;

	public static void main(String[] args) {
		first = input.nextInt();
		second = input.nextInt();
		third = input.nextInt();
		if(validateInput(args)) {
			performOperations();
			displayReport();
		}
	}

	private static void displayReport() {
		System.out.println("Robert Karaitis \n Project 2 - Simple Operations \n \n Operation Results: \n ------------------ \n");
		System.out.println("Exactly " + firstOut + " prime numbers exist between " + MIN_FIRST + " and " + first);
		System.out.println("The value of " + second + "! is " + secondOut);
		System.out.println("The year " + third + thirdOut);
	}

	private static boolean validateInput(String[] input){

        try{ //Tries to parse 1st number. If it's not an integer, error displays and program is exited.
                first = Integer.parseInt(input[0]);
        }
        catch(Exception ex) {
                System.out.println("\nInput #1 is not a valid Integer.");
                System.exit(1);
        }
        try{ //Tries to parse 2nd number. If it's not an integer, error displays and program is exited.
                second = Integer.parseInt(input[1]);
        }
        catch(Exception ex2){
                System.out.println("\nInput #2 is not a valid Integer.");
                System.exit(1);
        }
        try{ //Tries to parse 3rd number. If it's not an integer, error displays and program is exited.
                third = Integer.parseInt(input[2]);
        }
        catch(Exception ex3){
                System.out.println("\nInput #3 is not a valid Integer.");
                System.exit(1);
        }
        if (withinRange()){
                return true;
        }
        else{
                return false;
        }

}

	private static boolean withinRange() {
		boolean test = true;
		if(first<MIN_FIRST || first>MAX_FIRST) {
			test = false;
			System.out.println("The value " + first + " is out of range [" + MIN_FIRST + " to " + MAX_FIRST + "].");
		}
		if(second<MIN_SECOND || second>MAX_SECOND) {
			test = false;
			System.out.println("The value " + second + " is out of range [" + MIN_SECOND + " to " + MAX_SECOND + "].");
		}
		if(third<MIN_THIRD || third>MAX_THIRD) {
			test = false;
			System.out.println("The value " + third + " is out of range [" + MIN_THIRD + " to " + MAX_THIRD + "].");
		}
		return test;
	}

	private static void performOperations() {
		firstOut = countPrimes();
		secondOut = getFactorial(second);
		if(isLeapYear()==true) {
			thirdOut = " is a leap year";
		}
		if(isLeapYear()==false) {
			thirdOut = " is not a leap year";
		}
	}

	private static boolean isPrime(int n) {
		boolean prime = true;
		for(int x=2; x<=Math.sqrt(n);x++) {
			if(n%x==0) {
				prime = false;
			}
		}
		return prime;
	}

	private static int countPrimes() {
		int count=0;
		for(int x=2; x<=first; x++){
			if(isPrime(x)==true){
				count++;
			}
		}
		return count;
	}

	private static int getFactorial(int n) {
		if (n==1) {
			return 1;
		}
		else {
			return n * getFactorial(n - 1);
        }
	}

	private static boolean isLeapYear() {
		boolean leapYear = false;
		if(third%4==0) {
			leapYear = true;
			if(third%100==0) {
				leapYear = false;
				if(third%400==0) {
					leapYear = true;
				}
			}
		}
		return leapYear;
	}

}