TopCoder Statistics - Problem Statement

Problem Statement

Hero is inviting his friends to the party.

He has n friends, numbered 0 through n-1. For each of his friends there is at most one other person the friend dislikes. You are given this information as a int[] a with n elements. For each i, a[i] is either the number of the person disliked by friend i, we have a[i]=i if friend i likes everybody else.

Hero is inviting his friends one at a time. Whenever he invites friend i, they will accept if and only if the friend a[i] didn't accept an earlier invitation. (That includes two cases: either Hero didn't invite friend a[i] yet, or he did but the friend rejected the invitation.)

Hero noticed that the order in which he invites his friends matters: different orders may produce different numbers of accepted invitations.

Find an order that will produce the most accepted invitations, and return their number.

Definition

Class:: PrivateD2party
Method:: getsz
Parameters:: int[]
Returns:: int
Method signature:: int getsz(int[] a)
(be sure your method is public)

Constraints

a will contain exactly n elements.
n will be between 1 and 50, inclusive.
Each element of a will be between 0 and n - 1, inclusive.

Examples

{0,1}

Returns: 2

Each of the friends likes the other. Regardless of the order in which Hero asks them, they will both accept the invitation.
{1,0}

Returns: 1

Friend 0 dislikes friend 1 and vice versa. The first friend Hero asks will accept the invitation but then the other friend will certainly reject it.
{1,0,3,2}

Returns: 2
{5,2,2,4,5,0}

Returns: 5

Here is what would happen if Hero invited the friends in the order (0,1,2,3,4,5): Friend 5 didn't accept yet, so friend 0 would accept. Friend 2 didn't accept yet, so friend 1 would accept. Friend 2 likes everybody and therefore they would accept. Friend 4 didn't accept yet, so friend 3 would accept. Friend 5 didn't accept yet, so friend 4 would accept. Friend 0 did already accept, therefore friend 5 would reject. It turns out that this solution happens to be optimal: there is no order such that all six friends would accept the invitations.
{3,2,1,0,5,4}

Returns: 3
{13,1,2,6,17,17,2,18,14,14,15,7,14,15,6,8,5,5,4,2}

Returns: 19
{3,1,3,1}

Returns: 4
{6,27,14,17,11,8,2,13,6,24,10,24,17,21,13,21,7,1,18,26,11,7,11,10,18,7,11,4,17}

Returns: 28
{0,4,5,1,8,1,0,0,2,8,6,0,9}

Returns: 12
{28,21,4,11,7,22,23,17,25,26,24,26,6,2,10,21,7,27,21,12,18,27,8,4,2,1,7,13,1,29}

Returns: 29
{7,7,1,7,0,13,13,9,0,2,0,4,8,0}

Returns: 13
{9,14,6,2,0,7,10,3,5,3,10,12,1,0,9}

Returns: 15
{5,4,12,10,7,0,3,1,6,3,7,3,6}

Returns: 11
{1,1,0,7,0,7,7,4,3,7}

Returns: 10
{12,3,7,15,4,13,0,19,10,3,18,17,17,13,3,9,8,6,11,7}

Returns: 17
{5,12,16,8,18,11,6,9,8,12,7,6,0,18,16,0,5,4,7}

Returns: 19
{18,9,7,18,6,14,24,8,3,21,10,0,18,23,24,0,13,3,9,18,13,19,1,6,15}

Returns: 24
{0,8,13,1,0,9,3,12,16,15,2,6,14,8,3,0,15}

Returns: 17
{12,0,9,11,10,7,4,8,0,2,13,5,10,11,7}

Returns: 13
{7,20,12,17,7,8,13,7,13,13,16,9,13,2,17,18,9,11,3,20,8,0,11,0}

Returns: 23
{4,2,26,25,3,4,22,27,14,2,20,20,26,23,22,6,21,10,28,5,22,10,19,0,12,14,0,20,19,7,30}

Returns: 30
{11,7,4,5,9,8,11,10,10,6,5,10}

Returns: 11
{14,14,1,3,10,0,9,11,2,2,13,11,5,2,0}

Returns: 14
{12,9,12,2,1,1,11,13,3,2,6,13,12,2}

Returns: 14
{6,20,1,12,3,7,12,8,1,3,5,7,7,12,13,4,6,16,12,2,4}

Returns: 20
{3,9,12,6,14,12,7,7,16,0,4,12,12,2,14,3,16}

Returns: 17
{20,16,9,3,7,7,28,14,5,36,19,8,3,29,31,18,24,24,15,23,23,10,20,14,10,4,29,22,17,36,25,24,28,10,11,7,8,33}

Returns: 36
{13,2,5,12,0,1,12,13,11,8,11,9,8,4,6,6}

Returns: 13
{0,2,10,11,15,12,15,13,11,17,2,17,2,6,15,5,8,20,10,2,4}

Returns: 20
{9,0,29,24,5,21,18,10,14,11,5,30,0,9,16,24,29,9,20,28,22,31,33,33,0,30,22,23,2,15,21,31,19,16}

Returns: 34
{18,7,27,5,24,24,5,3,14,23,25,29,11,17,13,3,14,9,0,24,20,8,23,23,11,28,26,24,27,23,11}

Returns: 30
{20,17,12,16,6,22,21,16,19,13,12,14,17,20,15,6,5,21,20,21,8,1,23,16}

Returns: 22
{22,23,7,12,4,12,15,22,9,12,2,8,15,22,2,2,6,15,14,2,15,2,13,22}

Returns: 23
{2,19,14,31,22,35,37,33,24,3,10,21,31,26,20,34,32,14,5,31,25,5,11,30,28,12,3,16,35,20,11,28,3,2,5,35,29,19,34}

Returns: 39
{3,25,2,15,28,34,9,24,15,33,23,17,30,31,33,3,2,1,29,31,30,24,9,0,17,7,29,32,14,17,8,15,1,13,31}

Returns: 33
{8,8,16,22,22,7,0,11,15,1,12,15,11,13,0,3,16,5,16,23,8,21,5,12,3}

Returns: 24
{16,12,15,23,4,2,3,5,10,22,6,3,4,9,17,15,0,20,16,2,15,19,21,11,3}

Returns: 23
{22,7,34,18,13,23,9,1,3,35,32,19,29,35,20,11,29,36,37,0,33,2,21,10,29,18,35,4,30,0,36,39,9,7,23,11,22,37,16,13}

Returns: 38
{26,6,15,17,16,21,22,19,24,20,22,26,8,21,28,20,1,30,18,16,8,0,8,7,25,22,1,31,16,2,16,19}

Returns: 31
{1,18,30,15,7,30,5,12,22,17,7,30,7,20,0,11,14,1,4,11,14,13,12,17,13,3,27,18,30,9,17}

Returns: 30
{24,1,3,22,1,18,9,3,25,12,19,19,21,4,21,1,11,18,25,4,2,17,20,23,15,20,8,22,17}

Returns: 28
{10,21,8,18,11,15,27,8,20,28,23,15,13,7,24,19,4,28,2,9,3,9,32,13,21,0,21,14,18,10,3,15,23,18,34,11,10}

Returns: 36
{3,5,0,11,17,22,2,15,15,15,28,4,3,22,21,6,0,15,11,28,17,25,17,5,9,17,2,23,25}

Returns: 28
{3,27,35,39,25,27,0,16,28,34,29,16,22,35,36,25,40,25,2,4,35,4,20,31,19,31,25,36,27,16,33,23,32,41,23,38,43,30,22,36,37,28,42,27}

Returns: 41
{4,10,28,7,25,22,11,1,23,4,7,14,26,20,2,11,10,28,14,9,5,11,24,24,29,7,8,20,29,22}

Returns: 28
{8,7,4,13,21,13,10,1,2,20,28,24,11,12,22,19,10,9,1,31,8,20,4,6,28,28,28,13,26,17,21,2}

Returns: 29
{24,34,37,7,5,36,0,39,40,27,25,40,6,3,27,11,33,7,23,29,13,39,3,5,5,4,21,4,12,4,36,8,46,41,31,36,5,31,12,43,36,22,46,20,35,8,33,0}

Returns: 46
{2,0,21,33,8,30,22,25,37,6,9,36,33,10,25,32,15,23,22,12,27,32,16,25,32,28,14,10,6,14,22,35,16,25,16,22,12,0}

Returns: 37
{11,42,23,42,22,40,28,13,10,21,22,40,16,34,19,23,5,11,22,30,11,25,3,6,44,32,11,31,16,12,2,14,6,3,14,5,26,7,7,6,18,31,5,35,19}

Returns: 44
{17,38,14,22,2,2,29,42,19,5,3,43,21,0,21,16,24,7,21,39,32,45,26,21,0,26,14,5,6,11,21,41,21,5,22,6,41,2,6,21,42,29,16,10,2,6}

Returns: 44
{35,35,22,25,32,18,18,20,16,2,34,35,20,11,9,16,14,10,31,36,26,33,28,11,7,3,19,11,32,6,35,14,23,0,25,14,1}

Returns: 35
{6,15,17,16,24,9,10,25,20,2,15,2,27,16,11,3,23,3,9,1,0,24,13,3,16,25,14,9}

Returns: 27
{18,11,26,24,16,3,26,1,31,5,21,1,16,24,0,29,18,6,21,19,24,30,22,21,7,17,7,25,0,20,12,0}

Returns: 30
{2,18,39,25,38,22,3,23,8,6,19,14,5,11,22,42,36,38,15,2,40,8,30,18,2,8,8,1,17,22,13,19,34,31,42,25,22,39,0,11,14,35,11}

Returns: 42
{23,8,7,12,23,21,29,16,42,1,46,44,22,11,8,25,0,5,45,33,29,47,37,13,20,34,40,4,42,23,36,16,17,34,28,30,5,13,28,3,39,30,26,41,17,34,42,10}

Returns: 47
{38,33,12,38,29,32,21,21,6,32,18,12,4,4,15,23,37,3,28,13,8,19,39,18,22,27,41,10,24,22,25,41,20,39,39,37,3,13,13,3,34,21}

Returns: 41
{18,13,24,7,36,9,2,13,4,15,5,14,24,21,3,34,34,7,19,9,32,1,15,15,24,25,33,1,12,26,8,26,30,24,10,20,5}

Returns: 35
{24,6,35,20,12,11,4,25,12,17,38,19,13,37,4,38,6,27,16,30,14,21,13,30,26,24,11,22,34,33,28,33,37,0,22,4,3,18,25,10,33}

Returns: 40
{9,3,4,37,37,40,24,31,38,13,43,27,30,8,44,20,1,24,23,32,24,20,31,29,24,30,1,13,29,19,6,34,0,12,14,18,2,14,44,25,15,38,28,13,24,9}

Returns: 46
{15,34,22,6,43,34,47,2,31,38,12,37,26,34,36,46,46,21,22,5,27,41,45,37,33,30,39,31,13,39,22,42,41,34,7,17,17,10,31,20,37,13,9,37,16,46,13,37,9}

Returns: 47
{13,22,23,19,27,2,29,2,15,17,17,12,28,5,6,26,17,29,15,5,27,23,9,19,12,27,32,8,29,4,14,25,30}

Returns: 31
{12,14,19,4,23,8,7,3,3,5,7,0,16,3,4,30,23,20,31,6,26,25,11,24,21,31,15,1,18,29,18,8}

Returns: 31
{2,30,21,31,24,21,32,35,12,17,0,18,32,9,40,31,0,38,11,14,0,19,10,21,34,40,6,29,43,13,26,1,0,42,25,35,37,37,6,41,19,44,38,1,44,34}

Returns: 44
{27,4,31,5,44,1,43,5,8,11,22,27,8,14,21,13,43,12,16,25,38,8,43,27,36,35,37,25,28,32,5,21,43,11,29,33,1,26,31,39,1,9,14,33,21}

Returns: 43
{17,1,33,16,34,34,10,25,36,22,10,19,26,12,15,2,31,19,28,34,8,19,12,17,2,13,36,20,8,4,3,7,13,31,29,9,36,23}

Returns: 37
{33,11,3,24,21,18,14,29,4,2,15,17,19,35,34,25,23,22,30,31,20,32,20,8,10,28,12,16,13,5,6,7,0,1,9,27}

Returns: 36
{3,4,12,3,7,14,10,0,9,6,13,18,17,2,1,16,19,15,8,19}

Returns: 20
{9,9,11,15,29,4,21,22,19,3,2,31,5,13,13,27,17,8,23,5,4,23,26,25,14,28,33,14,7,30,1,12,18,16}

Returns: 34
{39,9,15,23,20,38,10,37,19,34,0,41,27,5,29,40,12,1,17,24,14,22,31,16,3,21,11,2,18,30,28,35,13,26,8,6,7,37,36,4,32,25}

Returns: 42
{11,18,21,10,17,13,8,2,8,19,6,3,9,14,12,5,20,0,7,1,15,4}

Returns: 22
{15,18,12,32,10,3,30,16,34,20,23,23,21,27,42,25,2,17,18,35,40,21,6,7,7,11,29,36,44,43,31,9,28,22,24,41,1,5,0,17,37,26,4,13,38}

Returns: 45
{19,1,1,16,20,21,0,5,6,10,11,18,3,2,22,14,9,12,23,17,8,4,7,13}

Returns: 24
{34,29,3,39,18,13,4,6,32,28,36,25,15,19,14,31,2,24,38,37,30,27,21,5,12,22,35,10,1,33,26,0,11,17,7,9,16,8,23,14}

Returns: 40
{3,16,7,17,29,11,5,33,14,21,31,8,15,4,30,23,10,1,26,9,2,18,20,23,19,0,22,25,27,24,28,12,13,6,32}

Returns: 35
{16,7,24,9,3,0,5,10,14,25,2,6,19,4,22,26,15,12,1,13,8,11,23,23,21,20,17}

Returns: 27
{7,1,24,11,9,16,5,4,19,15,0,8,1,22,20,23,3,18,13,21,12,14,6,2,17}

Returns: 25
{6,2,11,9,23,24,10,5,7,28,21,4,16,3,27,19,15,14,20,1,20,22,25,0,12,18,13,8,17}

Returns: 29
{12,6,25,23,8,3,9,31,2,9,7,4,10,17,5,26,24,27,16,15,22,11,13,30,21,20,28,14,29,18,1,19}

Returns: 32
{36,20,17,23,15,28,24,21,40,1,0,2,37,33,38,6,19,7,27,34,39,16,11,30,24,4,14,40,29,41,31,9,25,35,26,18,22,5,32,13,10,8}

Returns: 42
{32,35,15,1,27,4,14,5,23,31,21,10,2,14,0,19,16,13,20,11,33,30,12,24,26,23,17,25,7,28,18,34,16,6,8,0}

Returns: 36
{40,18,36,38,11,7,19,6,5,20,4,16,8,35,12,31,1,13,24,29,0,10,30,37,32,25,22,26,27,17,25,21,33,3,14,9,15,28,34,2,23}

Returns: 41
{21,15,14,5,4,0,20,23,30,31,19,4,11,27,16,9,26,24,29,14,34,32,3,18,6,10,26,22,30,17,4,12,28,2,1}

Returns: 35
{20,4,26,29,30,6,3,22,8,13,15,0,32,5,7,17,23,24,31,16,18,27,1,12,28,8,11,2,14,21,25,33,10,19}

Returns: 34
{21,15,25,6,5,1,18,11,9,20,16,11,3,19,28,2,17,24,23,14,26,22,27,13,0,12,7,8,10}

Returns: 29
{32,9,28,25,19,15,6,42,43,29,20,4,13,26,33,6,1,8,2,21,30,45,36,40,39,35,0,12,38,46,14,5,37,31,18,15,23,17,22,48,24,47,3,10,41,44,27,16,11}

Returns: 49
{8,44,45,40,24,24,1,27,25,41,5,28,32,48,13,38,28,23,18,4,11,15,0,29,34,2,35,14,12,43,45,22,26,31,18,10,7,19,46,21,49,46,17,39,42,9,37,6,3,38}

Returns: 50
{34,11,38,48,32,16,12,13,28,40,25,19,33,43,37,24,27,5,7,22,6,2,45,41,46,35,9,4,47,39,23,29,26,3,30,44,49,36,1,21,0,31,10,43,8,42,18,20,15,17}

Returns: 50
{7,2,29,1,14,27,3,9,18,19,18,21,33,4,17,10,11,30,18,12,6,0,24,15,31,28,32,27,5,8,23,25,34,20,22}

Returns: 35
{28,31,12,6,22,8,6,23,1,11,7,4,0,20,15,3,25,19,24,21,2,13,17,5,26,14,29,30,16,10,18,11}

Returns: 32
{4,9,7,19,43,16,18,44,34,47,11,3,22,13,26,35,48,0,32,23,42,8,41,29,12,30,5,37,1,17,10,49,40,25,20,46,39,13,15,28,38,36,45,6,27,24,21,31,33,2}

Returns: 50
{37,8,2,5,28,29,23,3,10,19,24,7,13,31,11,27,26,16,25,38,6,35,15,41,4,40,36,9,0,18,22,20,2,30,33,17,1,32,12,14,21,39}

Returns: 42
{10,16,4,5,0,36,17,1,2,14,11,24,30,31,22,28,6,19,37,33,35,20,12,38,27,30,9,7,23,34,29,3,8,33,15,26,11,25,13}

Returns: 39
{17,8,0,38,30,35,44,4,3,26,16,6,49,11,31,20,37,40,39,45,41,43,10,32,29,47,33,27,34,27,21,42,28,1,46,12,22,2,19,25,5,14,48,23,9,36,24,7,13,18}

Returns: 50
{1,28,30,35,4,12,20,27,36,32,0,19,17,14,9,25,39,18,38,15,13,2,4,37,5,8,21,3,24,33,6,23,34,10,31,16,22,7,11,40,29}

Returns: 41
{26,19,20,11,18,23,37,32,9,34,0,13,6,25,3,40,41,29,16,36,12,1,38,17,15,22,20,14,21,42,30,30,5,21,32,27,43,39,7,24,33,44,4,31,10}

Returns: 45
{6,23,19,27,32,5,16,13,31,34,30,1,0,21,15,35,33,8,20,12,24,18,38,37,22,11,2,5,17,7,26,14,28,3,10,36,9,4,25}

Returns: 39
{30,10,5,44,1,5,48,34,40,45,32,33,39,41,27,29,0,13,2,22,12,7,20,11,8,43,4,35,31,23,9,14,24,17,3,47,21,42,28,15,16,26,46,49,25,6,19,36,18,37}

Returns: 50
{28,15,36,35,16,7,22,21,44,47,31,14,43,45,3,46,49,13,25,30,26,29,48,34,1,27,6,0,23,12,4,39,10,6,20,42,26,17,2,24,18,19,33,40,37,41,11,32,48,36}

Returns: 50
{27,3,34,32,9,15,8,28,21,14,6,19,7,12,16,22,13,26,33,2,10,23,11,25,17,5,20,35,0,4,24,30,31,1,34,18}

Returns: 36
{2,20,12,0,31,11,25,36,27,13,22,10,6,32,17,5,34,4,21,28,35,33,8,16,7,23,18,24,29,15,19,3,32,14,30,9,1}

Returns: 37
{29,48,27,6,33,25,44,45,20,34,47,28,18,19,12,31,11,40,0,7,45,22,22,38,35,23,41,10,36,49,15,46,9,16,1,42,37,26,4,2,5,14,21,30,43,24,13,8,17,39}

Returns: 50
{35,41,9,14,36,12,32,13,11,44,48,22,8,37,20,0,26,16,42,46,1,33,38,3,40,10,15,25,23,31,5,2,24,39,28,43,30,27,17,34,40,6,19,7,21,49,47,45,29,4}

Returns: 50
{33,45,49,38,5,40,48,37,26,21,11,7,41,0,24,44,12,42,23,35,28,14,20,36,8,34,30,17,10,22,15,25,31,2,3,4,27,16,38,46,18,1,29,13,43,32,9,19,39,47}

Returns: 50
{38,42,5,29,7,18,6,14,16,17,26,34,49,37,44,25,15,47,3,0,19,20,12,24,8,27,6,32,22,23,48,9,41,36,13,46,10,2,4,35,21,28,45,11,28,40,1,30,39,33}

Returns: 50
{40,36,20,6,39,15,34,14,2,3,25,43,4,44,10,26,7,41,12,18,29,17,32,0,11,25,16,19,1,22,23,9,13,42,35,30,38,31,27,21,28,5,8,45,24,37}

Returns: 46
{27,4,20,18,4,16,33,24,46,49,19,9,7,35,22,12,36,13,21,39,25,11,31,15,8,26,28,34,29,37,1,48,17,23,2,40,44,30,32,45,41,6,43,0,14,42,5,10,47,38}

Returns: 50
{0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49}

Returns: 50
{25,48,15,23,8,20,11,14,4,40,35,6,41,28,7,2,19,43,26,16,5,30,47,3,34,0,18,37,13,49,21,45,33,32,24,10,38,27,36,44,9,12,46,17,39,31,42,22,1,29}

Returns: 25
{0}

Returns: 1
{3,3,3,3,3,3,3,3,3}

Returns: 9
{0, 1 }

Returns: 2
{1, 2, 0 }

Returns: 2
{1, 0, 0, 0 }

Returns: 3
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 0 }

Returns: 49
{0, 1, 1, 1, 1 }

Returns: 5
{10, 0, 4, 5, 1, 2, 9, 8, 3, 7, 6 }

Returns: 10
{3, 0, 1, 2 }

Returns: 3
{4, 0, 1, 2, 3 }

Returns: 4
{0, 0, 0, 0, 0 }

Returns: 5
{6, 5, 5, 4, 4, 3, 3, 2 }

Returns: 8
{0, 0, 0, 0, 0, 0 }

Returns: 6
{1, 3, 4, 1, 0 }

Returns: 4
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 0 }

Returns: 25
{0, 0, 2, 3 }

Returns: 4
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 33, 34, 35, 36, 2, 3, 4, 5, 6, 7, 8, 0, 12, 13, 14, 15, 16, 8 }

Returns: 48
{0, 1, 2, 3, 4, 5, 6 }

Returns: 7
{1, 1, 1, 1 }

Returns: 4
{2, 0, 1 }

Returns: 2
{0, 0, 0, 0, 4 }

Returns: 5
{0, 1, 2, 3, 5, 6, 6, 5, 7 }

Returns: 9
{2, 0, 3, 1, 2 }

Returns: 4
{1, 2, 3, 4, 0, 2, 2, 1, 1 }

Returns: 8
{41, 36, 6, 23, 42, 39, 42, 40, 49, 30, 17, 36, 33, 22, 32, 30, 13, 44, 46, 17, 26, 26, 10, 1, 9, 9, 26, 18, 24, 46, 43, 5, 12, 9, 25, 33, 27, 28, 11, 7, 15, 33, 18, 28, 33, 26, 11, 40, 42, 36 }

Returns: 48
{0, 1, 2, 1, 3, 4, 5, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 2, 3, 4, 5, 6 }

Returns: 49
{0, 2, 3, 1, 2, 3, 5 }

Returns: 6
{1, 2, 3, 0 }

Returns: 3
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }

Returns: 50
{0, 0, 0, 0 }

Returns: 4
{2, 0, 3, 1 }

Returns: 3
{3, 2, 0, 1, 5, 4 }

Returns: 4
{2, 2, 1, 3, 4, 1, 0, 0, 1, 2, 3, 2, 2, 3, 6, 7, 3, 2, 6, 8, 11, 13, 12, 14, 15, 16, 19, 43, 34, 23, 24, 43, 12, 10, 19, 18, 7, 21, 29, 31, 27, 26, 23, 33, 37, 38, 39, 3, 2, 2 }

Returns: 49
{2, 2, 2, 4, 5, 0 }

Returns: 6
{0, 0 }

Returns: 2
{5, 4, 3, 2, 1, 0 }

Returns: 3
{1, 2, 0, 0 }

Returns: 3
{3, 2, 1, 1 }

Returns: 3
{1, 2, 0, 4, 5, 3 }

Returns: 4
{0, 0, 0 }

Returns: 3
{1, 2, 0, 0, 4 }

Returns: 4
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 0 }

Returns: 17

Statistics

Problem Statement for "PrivateD2party"

Problem Statement

Definition

Constraints

Examples