03. Combinations

package NestedLoops;

import java.util.Scanner;

public class Combinations_03 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int n = Integer.parseInt(scanner.nextLine());

        int countCombination = 0;

        for (int x1 = 0; x1 <= n; x1++) {

            for (int x2 = 0; x2 <= n; x2++) {

                for (int x3 = 0; x3 <= n; x3++) {
                    int combinationResult = x1 + x2 + x3;
                    if (combinationResult == n){
                        countCombination ++;
                    }

                }
            }
        }

        System.out.println(countCombination);
    }
}