Problem:
Score : 200 points

Problem Statement

Snuke has come to a store that sells boxes containing balls. The store sells the following three kinds of boxes:

Red boxes, each containing R red balls

Green boxes, each containing G green balls

Blue boxes, each containing B blue balls

Snuke wants to get a total of exactly N balls by buying r red boxes, g green boxes and b blue boxes.
How many triples of non-negative integers (r,g,b) achieve this?

Constraints

All values in input are integers.

1 \leq R,G,B,N \leq 3000

Input

Input is given from Standard Input in the following format:

R G B N

Output

Print the answer.

Sample Input 1

1 2 3 4

Sample Output 1

4

Four triples achieve the objective, as follows:

(4,0,0)

(2,1,0)

(1,0,1)

(0,2,0)

Sample Input 2

13 1 4 3000

Sample Output 2

87058

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Wrong Answer)

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a[] = new int[3];
		
        a[0] = sc.nextInt();
        a[1] = sc.nextInt();
        a[2] = sc.nextInt();
        int N = sc.nextInt();
       
        
        int temp [] = new int [10];
        sort3(a, temp);
        
       
        int remainder = N-(N/a[2])*a[2];
        int count = 0;
        
        if (a[0]<=N && N/a[0]>1){
        	for (int i = 0; i<N/a[2]+1; i++){
        		count = count + remainder/a[1];
        		remainder = remainder+a[2];
        	}
        	System.out.println(count+N/a[2]+1);
        }
        else
        	System.out.println(0);
	}
	
	static void sort3(int arr[], int temp[]) { 
	
	    if (arr[1] < arr[0]) 
	        { 
	            temp[0] = arr[0]; 
	            arr[0] = arr[1]; 
	            arr[1] = temp[0]; 
	        } 
	  
	    if (arr[2] < arr[1]) 
	    { 
	            temp[0] = arr[1]; 
	            arr[1] = arr[2]; 
	            arr[2] = temp[0]; 
	              
	    if (arr[1] < arr[0]) 
	        { 
	            temp[0] = arr[0]; 
	            arr[0] = arr[1]; 
	            arr[1] = temp[0]; 
	        } 
	    } 
	} 

}