Distribute R,B beans such that each packet has at least 1 R and 1 B bean with absolute difference at most D

Last Updated : 04 Aug, 2021

Given two positive integers R and B representing R red and B blue beans and an integer D, the task is to check whether it is possible to distribute the beans among several (maybe, one) packets according to the following rules:

Each packet has at least one red bean.
Each packet has at least one blue bean.
The number of red and blue beans in each packet should differ in no more than D (or |R-B| <= D)

Print Yes if it is possible. Otherwise, print No.

Examples

Input: R = 1, B = 1, D = 0
Output: Yes
Explanation: Form one packet with 1 red and 1 blue bean. The absolute difference |1?1| = 0 ? D.

Input: R = 6, B = 1, D = 4
Output: No

Approach: This problem can be solved easily by observing that the maximum of (R and B) is D + 1 times the minimum of R and B. Follow the steps given below to solve the problem:

Find the maximum of R and B. and the minimum of R and B.
To satisfy the given 3 constraints, the value of the max(R, B) should be at most (D + 1) times min(R, B), because (D + 1) beans can be kept in each packet, 1 bean of one type, and D beans of the other type.
After completing the above steps, print “Yes” if the value of the max(R, B) is less than or equal to (D + 1)*min(R, B). Otherwise, print “No”.

Below is the implementation of the above approach:

C++

// C++ program for the above approach
#include <bits/stdc++.h>
using namespace std;
 
// Function to check if it is possible
// to distribute R red and B blue beans
// in packets such that the difference
// between the beans in each packet is
// atmost D
void checkDistribution(int R, int B, int D)
{
    // Check for the condition to
    // distributing beans
    if (max(R, B) <= min(R, B) * (D + 1)) {
 
        // Print the answer
        cout << "Yes";
    }
 
    // Distribution is not possible
    else {
        cout << "No";
    }
}
 
// Driver Code
int main()
{
    int R = 1, B = 1, D = 0;
    checkDistribution(R, B, D);
 
    return 0;
}

Java

// Java program for the above approach
import java.io.*;
 
class GFG 
{
   
    // Function to check if it is possible
    // to distribute R red and B blue beans
    // in packets such that the difference
    // between the beans in each packet is
    // atmost D
    static void checkDistribution(int R, int B, int D)
    {
       
        // Check for the condition to
        // distributing beans
        if (Math.max(R, B) <= Math.min(R, B) * (D + 1)) {
 
            // Print the answer
            System.out.println("Yes");
        }
 
        // Distribution is not possible
        else {
            System.out.println("No");
        }
    }
 
    // Driver Code
    public static void main(String[] args)
    {
        int R = 1, B = 1, D = 0;
        checkDistribution(R, B, D);
    }
}
 
// This code is contributed by Potta Lokesh

Python3

# Python3 program for the above approach
 
# Function to check if it is possible
# to distribute R red and B blue beans
# in packets such that the difference
# between the beans in each packet is
# atmost D
def checkDistribution(R, B, D):
     
    # Check for the condition to
    # distributing beans
    if (max(R, B) <= min(R, B) * (D + 1)):
         
        # Print the answer
        print("Yes")
     
    # Distribution is not possible
    else:
        print("No")
 
# Driver Code
R = 1
B = 1
D = 0
 
checkDistribution(R, B, D)
 
# This code is contributed by code_hunt

C#

// C# program for the above approach
using System;
 
class GFG{
     
    // Function to check if it is possible
    // to distribute R red and B blue beans
    // in packets such that the difference
    // between the beans in each packet is
    // atmost D
    static void checkDistribution(int R, int B, int D)
    {
       
        // Check for the condition to
        // distributing beans
        if (Math.Max(R, B) <= Math.Min(R, B) * (D + 1)) {
 
            // Print the answer
            Console.WriteLine("Yes");
        }
 
        // Distribution is not possible
        else {
            Console.WriteLine("No");
        }
    }
 
 
// Driver code
static public void Main()
{
    int R = 1, B = 1, D = 0;
    checkDistribution(R, B, D);
}
}
 
// This code is contributed by target_2.

Javascript

<script>
 
// JavaScript program for the above approach
 
    // Function to check if it is possible
    // to distribute R red and B blue beans
    // in packets such that the difference
    // between the beans in each packet is
    // atmost D
   function checkDistribution(R, B, D)
    {
       
        // Check for the condition to
        // distributing beans
        if (Math.max(R, B) <= Math.min(R, B) * (D + 1)) {
 
            // Print the answer
            document.write("Yes");
        }
 
        // Distribution is not possible
        else {
            document.write("No");
        }
    }
 
// Driver Code
 
    let R = 1, B = 1, D = 0;
    checkDistribution(R, B, D);
 
// This code is contributed by sanjoy_62.
</script>