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

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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

77/128

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 SakibAlamin Cpp14 0.00s
08 nasir_32_15 Cpp14 0.00s
09 smriad Cpp14 0.00s
10 pulak_ict_mbstu Cpp 0.00s
11 Morass Cpp14 0.00s
12 feodorv C 0.00s
13 Robbinb1993 Cpp 0.00s
14 wizard Cpp 0.00s
15 uzzal_rahman Cpp 0.00s
16 prateepm Cpp14 0.00s
17 tariqiitju Cpp 0.00s
18 ikaadil Cpp 0.00s
19 Bruteforcekid Cpp 0.00s
20 abdulmukit Cpp 0.00s
21 Zeerin Cpp 0.00s
22 i_love_nikita_gautam Cpp14 0.01s
23 nhamtan Cpp 0.01s
24 mahmud2690 Cpp 0.01s
25 shawon100 Cpp 0.01s
26 _dipu Cpp14 0.01s
27 emrul Cpp14 0.01s
28 rayhan50001 Cpp14 0.01s
29 mahbub07 Cpp14 0.01s
30 Taj025 CSharp 0.02s
31 king_of_sun Cpp14 0.02s
32 masba Python 0.02s
33 rabbicse CSharp 0.03s
34 joy25896 Cpp14 0.03s
35 haasib Cpp14 0.07s
36 Ishrak Cpp14 0.08s
37 jahirtheboss Cpp14 0.09s
38 RandyWaterhouse Python3 0.15s
39 ImagineWarrior Cpp14 0.21s
40 bhagyo Cpp14 0.33s
41 mamun4122 Cpp14 0.36s
42 rajdipsaha Cpp14 0.39s
43 njrafi Cpp14 0.39s
44 sahedsohel Cpp14 0.47s
45 rofi93 Cpp14 0.48s
46 ssavi Cpp14 0.48s
47 arsho Cpp14 0.48s
48 Mahmudul_Tushar Cpp14 0.48s
49 anowar1112 Cpp14 0.48s
50 murad_al_wajed Cpp14 0.49s
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