Network mask

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Problem

Convert Network Mask(Subnet Mask) address to simply count the number of bits.

The mask address displayed by Dot-decimal notation. Display the converted number as network prefix (CIDR notation).

For example: 255.255.192.000 -> /18

Options

exec is denied

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

Sample input:_

255.255.255.0

Sample output:

/24

Sample input:_

255.255.255.128

Sample output:

/25

Sample input:_

255.255.255.255

Sample output:

/32

Ranking

Ruby _

Rank	User	Size	Time	Date	Statistics
1	clock	20	0.0219	2011/09/29 23:54:44	0B / 4B / 16B
2	@tttttanaka	26	0.0640	2012/03/17 13:20:09	0B / 11B / 15B

Perl _

Rank	User	Size	Time	Date	Statistics
1	TAKO/j0nKI	21	0.0003	2010/04/08 17:56:22	0B / 11B / 10B
2	dcutter	27	0.2528	2010/04/09 00:17:34	0B / 11B / 16B

Python _

Rank	User	Size	Time	Date	Statistics
1	hallvabo	26	0.0608	2010/04/08 06:55:57	0B / 14B / 12B
2	TAKO/j0nKI	29	0.0448	2010/04/08 18:24:15	0B / 17B / 12B
3	tobiesque	49	0.0524	2010/04/08 19:51:48	0B / 26B / 23B

PHP _

Rank	User	Size	Time	Date	Statistics
1	xulapp	18	0.0874	2010/04/10 03:16:08	0B / 7B / 11B
2	TAKO/j0nKI	21	0.0717	2010/04/09 23:25:23	0B / 10B / 11B

Common LISP _

Rank	User	Size	Time	Date	Statistics
1	kozima	60	0.0792	2010/04/23 09:44:03	0B / 37B / 22B

Arc _

Rank	User	Size	Time	Date	Statistics
1	pooq	28	5.9703	2010/10/08 12:33:15	0B / 13B / 12B

Clojure _

Rank	User	Size	Time	Date	Statistics
1	pooq	38	3.0249	2012/03/18 07:02:31	0B / 22B / 13B

JavaScript _

Rank	User	Size	Time	Date	Statistics
1	xulapp	27	0.0161	2010/04/10 03:03:07	0B / 15B / 11B
2	murky-satyr	29	0.0659	2010/04/09 12:09:30	0B / 16B / 12B
3	TAKO/j0nKI	31	0.0406	2010/04/08 18:13:17	0B / 18B / 12B
4	ktt	31	0.0004	2010/04/09 09:13:25	0B / 16B / 14B
5	murky-satyr	26	0.0003	2010/04/12 06:35:58	0B / 15B / 10B
6	Tomac	65	0.0047	2011/09/29 23:47:47	0B / ?B / ?B

Lua _

Rank	User	Size	Time	Date	Statistics
1	twobit	35	0.0451	2012/07/03 07:56:22	0B / 19B / 16B
2	pooq	43	0.0024	2010/08/15 19:56:37	0B / 23B / 20B

Xtal _

Rank	User	Size	Time	Date	Statistics
1	pooq	64	0.0666	2011/01/04 06:30:11	0B / 37B / 26B

Icon _

Rank	User	Size	Time	Date	Statistics
1	pooq	47	0.0482	2012/04/03 22:24:33	0B / 30B / 14B

Prolog _

Rank	User	Size	Time	Date	Statistics
1	pooq	55	0.1023	2010/04/09 17:22:42	0B / 31B / 22B

BASIC _

Rank	User	Size	Time	Date	Statistics
1	pooq	43	0.0034	2010/12/27 19:58:54	0B / 23B / 19B

Perl6 _

Rank	User	Size	Time	Date	Statistics
1	pooq	22	6.4553	2010/08/10 13:12:24	0B / 13B / 7B

J _

Rank	User	Size	Time	Date	Statistics
1	pooq	31	0.4687	2010/04/09 08:03:05	0B / 15B / 13B
2	I., S.	24	0.1126	2012/06/03 00:03:46	0B / 6B / 18B
3	pooq	25	0.2435	2010/04/12 06:09:58	0B / 10B / 15B

C _

Rank	User	Size	Time	Date	Statistics
1	inaniwa(embed)	36	0.0372	2010/04/09 08:11:27	2B / 18B / 16B
2	TAKO/j0nKI	41	0.0526	2010/04/08 18:28:35	0B / 23B / 18B
3	mazun	60	0.0446	2010/04/08 16:26:17	0B / 29B / 31B
4	inaniwa	66	0.0451	2010/04/09 08:06:45	0B / 36B / 30B
5	not	32	0.0003	2010/04/12 07:32:59	0B / 16B / 16B

C++ _

Rank	User	Size	Time	Date	Statistics
1	TAKO/j0nKI	54	0.0407	2010/04/08 18:30:45	0B / 32B / 21B

OCaml _

Rank	User	Size	Time	Date	Statistics
1	m.ukai (embed)	54	0.1196	2010/09/20 16:31:14	0B / 29B / 24B

Haskell _

Rank	User	Size	Time	Date	Statistics
1	notogawa(embed)	45	0.0780	2010/04/09 01:12:32	0B / 27B / 18B
2	rst76	45	0.0899	2010/04/09 20:22:17	0B / 27B / 18B
3	rst76(embed)	45	0.1084	2010/04/09 20:23:02	0B / 27B / 18B
4	TAKO/j0nKI	56	0.0670	2010/04/08 04:27:25	0B / 26B / 24B
5	nobsun	154	0.1061	2010/04/08 10:11:50	0B / 78B / 64B

Java _

Rank	User	Size	Time	Date	Statistics
1	hallvabo	72	0.2996	2010/04/08 17:21:30	0B / 45B / 26B
2	TAKO/j0nKI	77	0.3063	2010/04/08 18:45:56	0B / 48B / 28B
3	nattow	80	0.2867	2010/04/09 16:33:50	0B / 50B / 28B

C# _

Rank	User	Size	Time	Date	Statistics
1	TAKO/j0nKI	92	0.1571	2010/04/08 18:10:02	0B / 62B / 25B
2	darefilz	101	0.1688	2010/04/09 02:17:04	0B / 66B / 30B

Maxima _

Rank	User	Size	Time	Date	Statistics
1	pooq	46	0.2203	2010/04/09 08:29:57	0B / 22B / 24B

Asymptote _

Rank	User	Size	Time	Date	Statistics
1	pooq	42	0.3372	2011/12/19 07:34:45	0B / 25B / 17B

AWK _

Rank	User	Size	Time	Date	Statistics
1	nn	20	0.0486	2010/04/09 00:38:40	0B / 7B / 13B

jq _

Rank	User	Size	Time	Date	Statistics
1	eban	34	0.0318	2014/12/11 14:38:13	0B / 16B / 18B

wake _

Rank	User	Size	Time	Date	Statistics
1	pooq	32	0.0117	2010/07/26 18:41:28	0B / 8B / 21B

dc _

Rank	User	Size	Time	Date	Statistics
1	Carlos Gutierrez	14	0.0317	2010/04/08 05:21:16	0B / 9B / 5B

Postscript _

Rank	User	Size	Time	Date	Statistics
1	yshl(embed)(bin)	25	0.2399	2010/04/25 13:26:54	10B / 12B / 2B
2	yshl(embed)	33	0.2414	2010/04/25 13:18:57	0B / 23B / 5B

R _

Rank	User	Size	Time	Date	Statistics
1	pooq	35	0.4855	2010/04/09 10:02:14	0B / 17B / 18B

GolfScript _

Rank	User	Size	Time	Date	Statistics
1	nn	19	0.1347	2010/04/09 01:10:28	0B / 5B / 14B

gs2 _

Rank	User	Size	Time	Date	Statistics
1	whio	7	0.2754	2017/04/28 03:36:36	2B / 4B / 1B

Vim _

Rank	User	Size	Time	Date	Statistics
1	nn	24	0.1047	2010/04/09 01:00:36	2B / 13B / 8B

Groovy _

Rank	User	Size	Time	Date	Statistics
1	murky-satyr	34	5.3962	2010/04/09 12:18:56	0B / 20B / 13B
2	nn	43	6.9256	2010/04/09 13:32:18	0B / 27B / 15B

Language Ranking_

Rank	Lang	User	Size	Score
1	gs2	whio	7	10000
2	dc	Carlos Gutierrez	14	5000
3	PHP	xulapp	18	3888
4	GolfScript	nn	19	3684
5	AWK	nn	20	3500
6	Ruby	clock	20	3500
7	Perl	TAKO/j0nKI	21	3333
8	Perl6	pooq	22	3181
9	Vim	nn	24	2916
10	J	I., S.	24	2916
11	Postscript	yshl(embed)(bin)	25	2800
12	Python	hallvabo	26	2692
13	JavaScript	murky-satyr	26	2692
14	Arc	pooq	28	2500
15	C	not	32	2187
16	wake	pooq	32	2187
17	Groovy	murky-satyr	34	2058
18	jq	eban	34	2058
19	R	pooq	35	2000
20	Lua	twobit	35	2000
21	Clojure	pooq	38	1842
22	Asymptote	pooq	42	1666
23	BASIC	pooq	43	1627
24	Haskell	notogawa(embed)	45	1555
25	Maxima	pooq	46	1521
26	Icon	pooq	47	1489
27	C++	TAKO/j0nKI	54	1296
28	OCaml	m.ukai (embed)	54	1296
29	Prolog	pooq	55	1272
30	Common LISP	kozima	60	1166
31	Xtal	pooq	64	1093
32	Java	hallvabo	72	972
33	C#	TAKO/j0nKI	92	760

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