# Taum and B’day HackerRank Problem – Coder In Me

Taum and B’day HackerRank Problem –

Taum is planning to celebrate the birthday of his friend, Diksha. There are two types of gifts that Diksha wants from Taum: one is b black and the other is w white. To make her happy, Taum has to buy black gifts and white gifts.

• The cost of each black gift is bc units.
• The cost of every white gift is wc units.
• The cost of converting each black gift into white gift or vice versa is z units.

Help Taum by deducing the minimum amount he needs to spend on Diksha’s gifts.

Input Format

The first line will contain an integer t, the number of test cases.
The next t pairs of lines are as follows: – The first line contains the values of integers b and w . – The next line contains the values of integers bc , wc , and z .

Constraints

1<=t<=10.

0<=b, w, bc, wc, z<=10

Output Format

t lines, each containing an integer: the minimum amount of units Taum needs to spend on gifts.

Sample Input of Taum and B’day

5
10 10
1 1 1
5 9
2 3 4
3 6
9 1 1
7 7
4 2 1
3 3
1 9 2

Explanation

• Test Case #01:
Since black gifts cost the same as white, there is no benefit to converting the gifts. Taum will have to buy each gift for 1 unit. The cost of buying all gifts will be:  b*bc+w*wc = 10*1+10*1    =20.
• Test Case #02:
Again, we can’t decrease the cost of black or white gifts by converting colors. is too high. We will buy gifts at their original prices, so the cost of buying all gifts will be:  b*bc+w*wc = 5*2+9*3 = 10+27 = 37.
• Test Case #03:
Since bc < bw+z, we will buy b+w = 3+6 = 9 white gifts at their original price of 1 . b  = 3 of the gifts must be black, and the cost per conversion, z=1 . Total cost is 9*1 + 3*1 = 12 .
• Test Case #04:
Similarly, we will buy w=7 white gifts at their original price,  wc = 2 . For black gifts, we will first buy white ones and color them to black, so that their cost will be reduced to wc + z = 2 + 1 = 3 . So cost of buying all gifts will be: 7*3 + 7*2 = 35 .

Test Case #05: We will buy   black gifts at their original price, bc = 1. For white gifts, we will first black gifts worth bc = 1 unit and color them to white for z = 2 units. The cost for white gifts is reduced to wc = bc + z = 2 + 1 = 3 units. The cost of buying all gifts will be:3*1 + 3*3 = 3 +9 = 12.

Sample Output of Taum and B’day HackerRank
20
37
12
35
12

Now See The Solution :

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

public static void main(String[] args) {
Scanner in=new Scanner(System.in);
int t=in.nextInt();
for(int k=0;k<t;k++){
BigInteger b=new BigInteger(in.next());
BigInteger w=new BigInteger(in.next());
BigInteger x=new BigInteger(in.next());
BigInteger y=new BigInteger(in.next());
BigInteger z=new BigInteger(in.next());
}