Distributing the balls

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Problem

In this task you have compute the number of ways we can distribute A balls into B cells with with every cell having at-least one ball. --Deb

Every A and B can be distinguishable.

Options

exec is denied

now post-mortem time, all source codes will be revealed

Sample input:_

6 3
10 3
20 20
19 14
14 9
20 20
9 9
19 4
18 18
17 13
19 19
16 16
3 1
4 2
13 3
14 4
17 13
17 12
18 9
13 13
18 2

Sample output:

540
55980
2432902008176640000
21234672840116736000
1863435974400
2432902008176640000
362880
270232006800
6402373705728000
30575780537702400
121645100408832000
20922789888000
1
14
1569750
249401880
30575780537702400
29708792431718400
38528927611574400
6227020800
262142

Sample input:_

19 10
11 7
17 9
19 19
19 2
20 10
13 3
19 16
20 16
1 0
16 16
18 14
20 19
14 11
16 16
11 11
16 11
14 4
17 4
20 14

Sample output:

1732015476199008000
322494480
3457819037312640
121645100408832000
524286
21473732319740064000
1569750
11029155770400768000
467644314338353152000
0
20922789888000
733062897120153600
23112569077678080000
2637143308800
20922789888000
39916800
1155068769254400
249401880
16664094960
549443323130397696000

Sample input:_

18 17
20 19
15 13
18 9
20 20
17 14
9 2
14 13
18 11

Sample output:

54420176498688000
23112569077678080000
28332944640000
38528927611574400
2432902008176640000
21785854970880000
510
566658892800
334942064711654400

Ranking

Perl _

RankUserSizeTimeDateStatistics
1tybalt89940.99482011/04/03 07:48:520B / ?B / ?B
2tails1362.53512011/03/31 23:38:560B / 54B / 76B
3teebee(tybalt89)920.68582011/06/24 16:50:320B / 36B / 52B

Python _

RankUserSizeTimeDateStatistics
1hallvabo1090.08262011/04/04 08:28:230B / 61B / 42B
2llhuii(mitchs (Rivu Das))991.37342014/08/13 22:58:470B / 60B / 33B
3mitchs (Rivu Das)1001.08352014/08/13 01:30:010B / 61B / 34B
4tester1090.10282014/06/14 14:07:550B / ?B / ?B
5Rivu Das1400.98662014/08/13 00:27:580B / ?B / ?B
6lupus1600.13812013/06/24 13:47:514B / 75B / 54B

Common LISP _

RankUserSizeTimeDateStatistics
1kozima1110.29082011/03/31 09:02:050B / 56B / 41B
2youz1110.18442011/03/31 12:39:170B / 55B / 41B

Arc _

RankUserSizeTimeDateStatistics
1youz1066.13802011/03/31 12:38:540B / 50B / 42B

J _

RankUserSizeTimeDateStatistics
1pooq540.17272011/03/29 14:02:130B / 16B / 36B

OCaml _

RankUserSizeTimeDateStatistics
1m.ukai2050.13152011/03/29 15:47:260B / 131B / 47B

Haskell _

RankUserSizeTimeDateStatistics
1sjoerd_visscher1370.13612011/04/03 08:16:356B / ?B / ?B

Maxima _

RankUserSizeTimeDateStatistics
1pooq650.48752011/03/29 16:18:080B / 37B / 27B

GolfScript _

RankUserSizeTimeDateStatistics
1narb350.92062011/04/04 17:52:130B / 6B / 29B
2pjt33370.64512011/04/02 04:03:390B / 4B / 33B
3_420.60832011/03/30 21:34:141B / ?B / ?B
4Peter Taylor (checking by Deb)420.63782011/03/30 21:34:561B / ?B / ?B
5eBusiness450.40782011/04/03 02:44:000B / ?B / ?B
6tester350.45532014/06/14 14:11:590B / ?B / ?B

Language Ranking_

RankLangUserSizeScore
1GolfScriptnarb3510000
2Jpooq546481
3Maximapooq655384
4Perlteebee(tybalt89)923804
5Pythonllhuii(mitchs (Rivu Das))993535
6Arcyouz1063301
7Common LISPkozima1113153
8Haskellsjoerd_visscher1372554
9OCamlm.ukai2051707

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