DCP-61: Drive In Grid Back to All Problems

Easy Math > Combinations and Permutations


In a city like New York, the roads are arrange in grid like pattern. Roads are also arranged in one way direction and you can only move right or down and never left or up. One such travel from point A to point B can be illustrated in the following picture: ![enter image description here][1] So we can see it took 11 steps to reach from point A to point B. However in our problem today, we will like to find out in how many ways we can reach from point A to point B. Input: ------ Input starts with an integer **T (1<= T <=100)**, denoting the number of test cases. Each case contains two integers **X (3 ≤ X ≤ 15)** and **Y (3 ≤ Y ≤ 15)** denoting the width and height of the grid. Output: ------- For each case of input, output the one integer **R** in a line, denoting the result - number of possible ways to reach B from A, where A is topmost and leftmost point in the grid and B is the bottom most and rightmost point in the grid. Sample Input ------------ 2 6 5 4 4 Sample Output ------------- 462 70 [1]: https://s3-ap-southeast-1.amazonaws.com/devskillimagestorage/questionimages/47ee783a-b6f1-c245-8448-08d34fbf5585_ee68b0c85e324c16b64640496b141deb_W351xH293.png


Problem Setter:

MD. Jalal Uddin

Please login to submit solution to this problem.

Problem Limits

Language Time Limit (seconds)
C 1.00
C++ 1.00
C++14 1.00
C# 2.00
Go 2.00
Java 2.00
JavaScript 2.00
Objective-C 2.00
Perl 2.00
PHP 2.00
Python 2.00
Python3 2.00
Ruby 2.00
VB.Net 2.00

Problem Stats

54/96

Solve/Submission

Ranking

# User Language Timing
01 ash12 Cpp14 0.00s
02 MAHRahat Cpp14 0.00s
03 seyedssz Cpp14 0.00s
04 sadia2427 Cpp14 0.00s
05 7Mahfuz Cpp14 0.00s
06 nazmul_bzs Cpp14 0.00s
07 Dragon_162 Cpp14 0.00s
08 nasir_32_15 Cpp14 0.00s
09 smriad Cpp14 0.00s
10 pulak_ict_mbstu Cpp 0.00s
11 mahbub07 Cpp14 0.01s
12 lightlessShadO Cpp14 0.01s
13 emrul Cpp14 0.01s
14 rayhan50001 Cpp14 0.01s
15 joy25896 Cpp14 0.03s
16 haasib Cpp14 0.07s
17 Ishrak Cpp14 0.08s
18 jahirtheboss Cpp14 0.09s
19 ImagineWarrior Cpp14 0.21s
20 bhagyo Cpp14 0.33s
21 mamun4122 Cpp14 0.36s
22 rajdipsaha Cpp14 0.39s
23 njrafi Cpp14 0.39s
24 sahedsohel Cpp14 0.47s
25 rofi93 Cpp14 0.48s
26 ssavi Cpp14 0.48s
27 arsho Cpp14 0.48s
28 Mahmudul_Tushar Cpp14 0.48s
29 anowar1112 Cpp14 0.48s
30 murad_al_wajed Cpp14 0.49s
31 faisalxn Cpp14 0.49s
32 fsshakkhor Cpp14 0.49s
33 sayedgkm Cpp14 0.49s
34 darkprinx Cpp14 0.49s
35 Ihtiaz Cpp14 0.49s
36 rafsan_rana Cpp14 0.49s
37 habib_rahman Cpp14 0.49s
38 math10 Cpp14 0.50s
39 rony_ghost Cpp14 0.50s
40 codehead Cpp14 0.50s
41 smjlord068 Cpp14 0.50s
42 shivazi Cpp14 0.52s
43 ProKawsar Cpp14 0.56s
Feedback

Your feedback is our precious!



Or call +88 02 9853138 for support