Same sum FIXED

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Problem

1 + 2 + 3 + ... + k = (k+1) + (k+2) + (k+3) + ... + n
1 < n < 1000000000
Print n,k.

Options

exec is denied

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

Sample input:_

*NOTHING*

Sample output:

n = 3 , k = 2
n = 20 , k = 14
n = 119 , k = 84
n = 696 , k = 492
n = 4059 , k = 2870
n = 23660 , k = 16730
n = 137903 , k = 97512
n = 803760 , k = 568344
n = 4684659 , k = 3312554
n = 27304196 , k = 19306982
n = 159140519 , k = 112529340
n = 927538920 , k = 655869060

Ranking

Ruby _

Rank	User	Size	Time	Date	Statistics
1	clock	55	0.0121	2013/09/26 02:31:25	0B / 23B / 26B
2	leonid	55	0.0163	2013/10/02 09:50:12	0B / 24B / 24B

Perl _

Rank	User	Size	Time	Date	Statistics
1	tails	52	0.0193	2013/09/26 01:50:48	0B / 20B / 25B
2	brx	59	0.0340	2013/10/03 05:00:21	0B / 21B / 30B
3	teebee	61	0.0119	2013/09/22 09:43:50	3B / 21B / 29B
4	whio	63	0.0207	2013/10/02 08:07:49	4B / 25B / 25B
5	_	70	0.0211	2013/09/25 12:21:44	0B / 26B / 38B
6	BioFALSE	203	0.0001	2013/12/09 04:51:45	0B / 147B / 49B

Python _

Rank	User	Size	Time	Date	Statistics
1	clock	55	0.0467	2013/09/26 02:27:44	0B / 25B / 27B
2	leonid	55	0.0376	2013/10/02 09:45:37	0B / 25B / 26B
3	hallvabo	58	0.0307	2013/09/24 09:03:54	0B / 28B / 27B
4	primo	66	0.0380	2013/10/01 18:48:25	0B / 30B / 30B
5	rolf	67	0.0332	2013/09/25 02:29:22	0B / 34B / 28B

PHP _

Rank	User	Size	Time	Date	Statistics
1	clock	59	0.0226	2013/09/26 08:24:00	1B / 21B / 31B

Io _

Rank	User	Size	Time	Date	Statistics
1	clock	67	0.0767	2013/10/02 00:20:19	0B / 30B / 31B

JavaScript _

Rank	User	Size	Time	Date	Statistics
1	clock	56	0.0130	2013/09/26 02:29:36	0B / 25B / 28B
2	Shmiddty	73	0.0142	2013/09/24 00:24:03	0B / 36B / 34B

Lua _

Rank	User	Size	Time	Date	Statistics
1	clock	75	0.0001	2013/10/02 00:24:41	0B / 35B / 27B

Xtal _

Rank	User	Size	Time	Date	Statistics
1	clock	62	0.0144	2013/09/28 08:10:47	0B / 26B / 30B

BASIC _

Rank	User	Size	Time	Date	Statistics
1	clock	58	0.0224	2013/09/26 20:58:05	0B / 27B / 23B
2	pooq	70	0.0201	2013/09/26 12:15:07	0B / 33B / 24B

J _

Rank	User	Size	Time	Date	Statistics
1	I., S.(cheat)	61	0.0252	2013/09/22 12:05:20	0B / 12B / 42B
2	I., S.	64	0.0253	2013/10/05 07:28:52	0B / 18B / 37B

C _

Rank	User	Size	Time	Date	Statistics
1	clock	67	0.0001	2013/10/01 15:39:29	0B / 30B / 31B
2	tails	68	0.0131	2013/09/26 00:52:25	0B / 28B / 34B
3	ush	76	0.0001	2013/09/23 04:55:15	0B / 34B / 36B
4	ordinary human being	85	0.0001	2013/10/04 23:50:42	0B / ?B / ?B

Maxima _

Rank	User	Size	Time	Date	Statistics
1	clock	68	0.1034	2013/09/26 21:06:30	0B / 31B / 30B
2	pooq	94	0.5631	2013/09/26 12:33:19	0B / 45B / 42B

Octave _

Rank	User	Size	Time	Date	Statistics
1	pooq	96	1.2440	2013/09/26 18:55:23	0B / 41B / 48B

AWK _

Rank	User	Size	Time	Date	Statistics
1	clock	55	0.0105	2013/09/28 20:50:06	0B / 25B / 24B
2	I., S.	70	0.0105	2013/10/05 07:38:52	0B / 32B / 32B

bc _

Rank	User	Size	Time	Date	Statistics
1	clock	56	0.0104	2013/10/02 00:11:10	0B / 21B / 27B

dc _

Rank	User	Size	Time	Date	Statistics
1	tails	48	0.0126	2013/09/24 00:42:03	0B / 26B / 16B

GolfScript _

Rank	User	Size	Time	Date	Statistics
1	tails	38	0.0175	2013/09/27 02:03:50	0B / 11B / 21B
2	clock	38	0.0179	2013/10/01 15:51:33	0B / 11B / 21B

Groovy _

Rank	User	Size	Time	Date	Statistics
1	clock	59	0.9539	2013/10/02 00:16:42	0B / 28B / 25B

Logo _

Rank	User	Size	Time	Date	Statistics
1	clock	56	0.0002	2013/10/02 15:55:39	0B / 24B / 28B

Language Ranking_

Rank	Lang	User	Size	Score
1	GolfScript	tails	38	10000
2	dc	tails	48	7916
3	Perl	tails	52	7307
4	Python	clock	55	6909
5	Ruby	clock	55	6909
6	AWK	clock	55	6909
7	JavaScript	clock	56	6785
8	bc	clock	56	6785
9	Logo	clock	56	6785
10	BASIC	clock	58	6551
11	PHP	clock	59	6440
12	Groovy	clock	59	6440
13	J	I., S.(cheat)	61	6229
14	Xtal	clock	62	6129
15	C	clock	67	5671
16	Io	clock	67	5671
17	Maxima	clock	68	5588
18	Lua	clock	75	5066
19	Octave	pooq	96	3958

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