Proof of solution of Problem 700B connesting universities? - Codeforces

→ Pay attention

Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
18:45:17
Register now »

*has extra registration

→ Top rated

#	User	Rating
1	tourist	4009
2	jiangly	3823
3	Benq	3738
4	Radewoosh	3633
5	jqdai0815	3620
6	orzdevinwang	3529
7	ecnerwala	3446
8	Um_nik	3396
9	ksun48	3390
10	gamegame	3386

Countries | Cities | Organizations

→ Top contributors

#	User	Contrib.
1	cry	167
2	Um_nik	163
3	maomao90	162
3	atcoder_official	162
5	adamant	159
6	-is-this-fft-	158
7	awoo	157
8	TheScrasse	154
9	Dominater069	153
9	nor	153

View all →

→ Find user

→ Recent actions

Detailed →

Proof of solution of Problem 700B connesting universities?

Revision en1, by spirited_away_, 2019-08-30 03:04:45

Can anyone give me more detail proof of why the answer to the problem is always summation of min(S[v], 2*k - S[v]).

The editorial is not clear.

History

Revisions

	Rev.	Lang.	By	When	Δ	Comment
	en3		spirited_away_	2019-08-30 03:05:56	68
	en2		spirited_away_	2019-08-30 03:05:01	2
	en1		spirited_away_	2019-08-30 03:04:45	249	Initial revision (published)