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Third Dimension

By ridowan007 · Limits 2s, 512 MB

Mr. J wants to learn about combinatorics. He started reading a book on combinatorics and came across this problem:

A town, rectangular in shape, has a grid-like street network. It consists of x+1 parallel lines headed north-south and y+1 parallel lines headed east-west. You can think of Manhattan as an example. In how many ways can a car reach the north-east corner if it starts in the south-west comer and travels only in the east and north directions?"

So the problem is, you are at AA (0,0)(0, 0) position in a grid. You can only go to the right or towards the top. You have to determine, how many ways you can go to BB (x,y)(x, y).

Now Mr. J found the solution of the problem in the book, and he started to wonder what if he adds a third dimension to this problem.

Imagine there is a box with xx width, yy height and zz depth. You are standing in one corner (0,0,0)(0, 0, 0). In each move, you can only go front (+1 in X dimension), right (+1 in Y dimension) and towards the top (+1 in Z dimension). So from (A,B,C)(A, B, C) you can go to (A+1,B,C)(A+1, B, C), (A,B+1,C)(A, B+1, C), or (A,B,C+1)(A, B, C+1) in one move.

Now determine how many ways you can go to the corner (x,y,z)(x, y, z) from (0,0,0)(0, 0, 0). Two ways are considered different if after any one of the moves they are in a different position in the box.


The first line of the input is TT (1T1501 ≤ T ≤ 150), the number of test cases. Then TT test cases follow.

Each test case has 3 integers xx, yy, zz (1x,y,z51 ≤ x, y, z ≤ 5) in a line. They represent the width, the height and the depth of the box respectively.


For each test case, print a line in "Case #K: R" format where K is the case number and R is the desired result.


1 1 1
1 1 2
2 1 1
Case #1: 6
Case #2: 12
Case #3: 12



80% Solution Ratio

Sherlock221bEarliest, Feb '16

Tarik.amtolyFastest, 0.0s

RobinHood3082Lightest, 0 B

aNkanpy.pritomShortest, 159B


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