sum numbers

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Language is selected by the extension of the file. See the list of supported languages to know the extension of your language.

Problem

given an int n, sum up the numbers from 1 to n and return the result

Options

rejudge feature is enabled

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

Sample input:_

Sample output:

Sample input:_

Sample output:

Sample input:_

Sample output:

Ranking

Ruby _

Rank	User	Size	Time	Date	Statistics
1	rad	19	0.0491	2026/03/04 04:25:24	0B / ?B / ?B
2	moon	21	0.0490	2026/01/04 21:02:58	0B / 13B / 7B
3	#c0ffee	21	0.0490	2026/01/05 07:29:19	0B / 11B / 9B

Ruby2 _

Rank	User	Size	Time	Date	Statistics
1	rad	19	0.2580	2026/03/04 04:23:52	0B / ?B / ?B

Perl _

Rank	User	Size	Time	Date	Statistics
1	test1	14	0.0553	2025/12/27 16:57:45	0B / ?B / ?B

J _

Rank	User	Size	Time	Date	Statistics
1	tubular	16	0.0563	2026/01/05 15:17:59	0B / 7B / 9B

K _

Rank	User	Size	Time	Date	Statistics
1	tubular	14	0.0431	2026/01/05 15:13:45	0B / 3B / 11B

iogii _

Rank	User	Size	Time	Date	Statistics
1	#c0ffee	2	0.0540	2025/12/28 16:45:47	0B / 0B / 2B
2	tubular	5	0.0590	2026/01/05 15:27:49	0B / 5B / 0B

C _

Rank	User	Size	Time	Date	Statistics
1	moon	45	0.0508	2025/12/28 00:31:45	0B / 25B / 20B

sed _

Rank	User	Size	Time	Date	Statistics
1	McBusLuck	16	0.0418	2026/03/04 16:57:34	0B / ?B / ?B

Whitespace _

Rank	User	Size	Time	Date	Statistics
1	%20	42	0.0814	2025/12/31 05:03:24	0B / 0B / 0B

Nibbles _

Rank	User	Size	Time	Date	Statistics
1	tails	1	0.0529	2025/12/31 01:53:07	1B / 0B / 0B

FerNANDo _

Rank	User	Size	Time	Date	Statistics
1	%20	49	0.1243	2025/12/31 07:38:33	0B / 25B / 0B

Language Ranking_

Rank	Lang	User	Size	Score
1	Nibbles	tails	1	10000
2	iogii	#c0ffee	2	5000
3	Perl	test1	14	714
4	K	tubular	14	714
5	J	tubular	16	625
6	sed	McBusLuck	16	625
7	Ruby2	rad	19	526
8	Ruby	rad	19	526
9	Whitespace	%20	42	238
10	C	moon	45	222
11	FerNANDo	%20	49	204

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