oj.uz

Submission #143748

# Submission time Handle Problem Language Result Execution time Memory
143748 2019-08-15T02:23:42 Z joseacaz Split the Attractions (IOI19_split) C++17
40 / 100
 169 ms 16340 KB 
#include "split.h"
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;

const int MAXN = 100005;

int N, M, sz[MAXN], parent[MAXN], nodes, nodeA, vis[MAXN], vis2[MAXN], centroid;
vi Tree[MAXN], Graph[MAXN], ans, nodes2;
vector < pii > part ( 3, {0, 0} );
map<pii, int> MP;

int pre ( int node, int p = -1 )
{
	sz[node] = 1;
	for ( auto i : Tree[node] )
		if ( i != p )
			sz[node] += pre ( i, node );
	return sz[node];
}

int find_centroid ( int node, int p = -1 )
{
	for ( auto i : Tree[node] )
		if ( i != p && 2 * sz[i] > sz[0] )
			return find_centroid ( i, node );
	return node;
}

int look ( int node )
{
	if ( node == parent[node] )
		return node;
	return parent[node] = look ( parent[node] );
}

void join ( int nodeA, int nodeB )
{
	parent[look(nodeB)] = look(nodeA);
}

void dfs ( int root, int node, int p = -1 )
{
	join ( root, node );
	for ( auto i : Tree[node] )
		if ( i != p )
			dfs ( root, i, node );
}

void paint ( int node, int color )
{
	if ( nodes )
		ans[node] = color, nodes--;
	else
		ans[node] = part[2].second;
	
	vis[node] = 1;
	for ( auto i : Tree[node] )
		if ( !vis[i] )
			paint ( i, color );
}

void possible ( int node )
{
	nodes -= sz[node];
	vis2[node] = 1;
	for ( auto i : Graph[node] )
		if ( !vis2[i] )
			possible ( i );
}

void paint2 ( int node, int color )
{
	if ( nodes > 0 )
	{
		paint ( node, color );
		vis[node] = 1;
	}
	
	vis2[node] = 1;
	for ( auto i : Graph[node] )
		if ( !vis2[i] )
			paint2 ( i, color );
}

vi find_split ( int _n, int a, int b, int c, vi p, vi q )
{
	part[0] = {a, 1};
	part[1] = {b, 2};
	part[2] = {c, 3};
	sort ( part.begin(), part.end() );
	N = _n;
	M = p.size();

	ans.resize ( N );
	for ( int i = 0; i < N; i++ )
		parent[i] = i, ans[i] = 0;
	for ( int i = 0; i < M; i++ )
	{
		if ( look ( p[i] ) != look ( q[i] ) )
		{
			join ( p[i], q[i] );
			Tree[p[i]].push_back ( q[i] );
			Tree[q[i]].push_back ( p[i] );
		}
	}
	
	pre ( 0 );
	centroid = find_centroid ( 0 );
	vis[centroid] = 1;
	pre ( centroid );
	for ( int i = 0; i < N; i++ )
		parent[i] = i;
	
	nodeA = -1;
	for ( auto i : Tree[centroid] )
	{
		dfs ( i, i, centroid );
		if ( sz[i] >= part[0].first )
			nodeA = i;
		nodes2.push_back ( i );
	}
	
	if ( nodeA != -1 )
	{
		vis[nodeA] = 1;
		nodes = part[0].first;
		paint ( nodeA, part[0].second );
		nodes = part[1].first;
		paint ( centroid, part[1].second );
		return ans;
	}

	for ( int i = 0; i < M; i++ )
	{
		if ( p[i] == centroid or q[i] == centroid )
			continue;

		if ( look(p[i]) != look(q[i]) && !MP[{look(p[i]), look(q[i])}])
		{
			Graph[look(p[i])].push_back ( look(q[i]) );
			Graph[look(q[i])].push_back ( look(p[i]) );
			MP[{look(p[i]), look(q[i])}] = 1;
			MP[{look(q[i]), look(p[i])}] = 1;
		}
	}
	
	for ( auto i : nodes2 )
	{
		nodes = part[0].first;
		possible ( i );
		
		if ( nodes <= 0 )
		{
			for ( auto j : nodes2 )
				vis2[j] = 0;
			nodes = part[0].first;
			paint2 ( i, part[0].second );
			nodes = part[1].first;
			paint ( centroid, part[1].second );
			return ans;
		}
	}
	
	for ( auto &i : ans )
		i = 0;
	return ans;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB ok, correct split
2 Correct 6 ms 4984 KB ok, correct split
3 Correct 6 ms 5112 KB ok, correct split
4 Correct 6 ms 4984 KB ok, correct split
5 Correct 6 ms 4984 KB ok, correct split
6 Correct 6 ms 4984 KB ok, correct split
7 Correct 169 ms 16272 KB ok, correct split
8 Correct 141 ms 14828 KB ok, correct split
9 Correct 109 ms 14328 KB ok, correct split
10 Correct 120 ms 16092 KB ok, correct split
11 Correct 141 ms 15476 KB ok, correct split

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4984 KB ok, correct split
2 Correct 6 ms 4988 KB ok, correct split
3 Correct 6 ms 4984 KB ok, correct split
4 Correct 136 ms 12568 KB ok, correct split
5 Correct 106 ms 11768 KB ok, correct split
6 Correct 145 ms 16340 KB ok, correct split
7 Correct 139 ms 14712 KB ok, correct split
8 Correct 160 ms 13180 KB ok, correct split
9 Correct 150 ms 11772 KB ok, correct split
10 Correct 73 ms 12524 KB ok, correct split
11 Correct 73 ms 12656 KB ok, correct split
12 Correct 78 ms 12652 KB ok, correct split

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 4984 KB ok, correct split
2 Correct 103 ms 11744 KB ok, correct split
3 Correct 41 ms 7800 KB ok, correct split
4 Correct 6 ms 4984 KB ok, correct split
5 Correct 111 ms 13276 KB ok, correct split
6 Correct 134 ms 13232 KB ok, correct split
7 Correct 117 ms 13048 KB ok, correct split
8 Correct 124 ms 13816 KB ok, correct split
9 Correct 122 ms 13048 KB ok, correct split
10 Correct 34 ms 7260 KB ok, no valid answer
11 Correct 48 ms 8440 KB ok, no valid answer
12 Correct 90 ms 12532 KB ok, no valid answer
13 Correct 95 ms 11872 KB ok, no valid answer
14 Correct 78 ms 12656 KB ok, no valid answer

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB ok, correct split
2 Correct 6 ms 4984 KB ok, no valid answer
3 Correct 6 ms 4984 KB ok, correct split
4 Correct 6 ms 4984 KB ok, correct split
5 Correct 6 ms 4984 KB ok, correct split
6 Correct 6 ms 4984 KB ok, correct split
7 Correct 7 ms 4984 KB ok, correct split
8 Correct 6 ms 4984 KB ok, correct split
9 Correct 8 ms 5240 KB ok, correct split
10 Correct 10 ms 5240 KB ok, correct split
11 Correct 7 ms 4984 KB ok, correct split
12 Correct 10 ms 5368 KB ok, correct split
13 Correct 7 ms 4984 KB ok, correct split
14 Correct 8 ms 4984 KB ok, correct split
15 Correct 7 ms 4984 KB ok, correct split
16 Correct 6 ms 4984 KB ok, correct split
17 Correct 6 ms 4984 KB ok, correct split
18 Correct 6 ms 4984 KB ok, correct split
19 Correct 7 ms 5112 KB ok, correct split
20 Correct 8 ms 5084 KB ok, correct split
21 Correct 9 ms 5240 KB ok, correct split
22 Correct 8 ms 5240 KB ok, correct split
23 Correct 8 ms 5240 KB ok, correct split
24 Correct 9 ms 5244 KB ok, correct split
25 Correct 9 ms 5240 KB ok, correct split
26 Correct 8 ms 5240 KB ok, correct split
27 Correct 8 ms 5240 KB ok, correct split
28 Correct 8 ms 5240 KB ok, correct split
29 Correct 11 ms 5112 KB ok, correct split
30 Correct 8 ms 5240 KB ok, correct split
31 Correct 7 ms 5112 KB ok, correct split
32 Correct 6 ms 5112 KB ok, correct split
33 Correct 6 ms 5112 KB ok, correct split
34 Correct 9 ms 5240 KB ok, correct split
35 Correct 9 ms 5240 KB ok, correct split
36 Correct 7 ms 5112 KB ok, correct split
37 Correct 10 ms 5368 KB ok, correct split
38 Correct 10 ms 5368 KB ok, correct split
39 Correct 10 ms 5496 KB ok, correct split
40 Correct 10 ms 5496 KB ok, correct split
41 Correct 9 ms 5240 KB ok, correct split
42 Incorrect 8 ms 5368 KB 2 components are not connected
43 Halted 0 ms 0 KB -

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 5112 KB ok, correct split
2 Correct 6 ms 4984 KB ok, correct split
3 Correct 6 ms 5112 KB ok, correct split
4 Correct 6 ms 4984 KB ok, correct split
5 Correct 6 ms 4984 KB ok, correct split
6 Correct 6 ms 4984 KB ok, correct split
7 Correct 169 ms 16272 KB ok, correct split
8 Correct 141 ms 14828 KB ok, correct split
9 Correct 109 ms 14328 KB ok, correct split
10 Correct 120 ms 16092 KB ok, correct split
11 Correct 141 ms 15476 KB ok, correct split
12 Correct 6 ms 4984 KB ok, correct split
13 Correct 6 ms 4988 KB ok, correct split
14 Correct 6 ms 4984 KB ok, correct split
15 Correct 136 ms 12568 KB ok, correct split
16 Correct 106 ms 11768 KB ok, correct split
17 Correct 145 ms 16340 KB ok, correct split
18 Correct 139 ms 14712 KB ok, correct split
19 Correct 160 ms 13180 KB ok, correct split
20 Correct 150 ms 11772 KB ok, correct split
21 Correct 73 ms 12524 KB ok, correct split
22 Correct 73 ms 12656 KB ok, correct split
23 Correct 78 ms 12652 KB ok, correct split
24 Correct 6 ms 4984 KB ok, correct split
25 Correct 103 ms 11744 KB ok, correct split
26 Correct 41 ms 7800 KB ok, correct split
27 Correct 6 ms 4984 KB ok, correct split
28 Correct 111 ms 13276 KB ok, correct split
29 Correct 134 ms 13232 KB ok, correct split
30 Correct 117 ms 13048 KB ok, correct split
31 Correct 124 ms 13816 KB ok, correct split
32 Correct 122 ms 13048 KB ok, correct split
33 Correct 34 ms 7260 KB ok, no valid answer
34 Correct 48 ms 8440 KB ok, no valid answer
35 Correct 90 ms 12532 KB ok, no valid answer
36 Correct 95 ms 11872 KB ok, no valid answer
37 Correct 78 ms 12656 KB ok, no valid answer
38 Correct 6 ms 5112 KB ok, correct split
39 Correct 6 ms 4984 KB ok, no valid answer
40 Correct 6 ms 4984 KB ok, correct split
41 Correct 6 ms 4984 KB ok, correct split
42 Correct 6 ms 4984 KB ok, correct split
43 Correct 6 ms 4984 KB ok, correct split
44 Correct 7 ms 4984 KB ok, correct split
45 Correct 6 ms 4984 KB ok, correct split
46 Correct 8 ms 5240 KB ok, correct split
47 Correct 10 ms 5240 KB ok, correct split
48 Correct 7 ms 4984 KB ok, correct split
49 Correct 10 ms 5368 KB ok, correct split
50 Correct 7 ms 4984 KB ok, correct split
51 Correct 8 ms 4984 KB ok, correct split
52 Correct 7 ms 4984 KB ok, correct split
53 Correct 6 ms 4984 KB ok, correct split
54 Correct 6 ms 4984 KB ok, correct split
55 Correct 6 ms 4984 KB ok, correct split
56 Correct 7 ms 5112 KB ok, correct split
57 Correct 8 ms 5084 KB ok, correct split
58 Correct 9 ms 5240 KB ok, correct split
59 Correct 8 ms 5240 KB ok, correct split
60 Correct 8 ms 5240 KB ok, correct split
61 Correct 9 ms 5244 KB ok, correct split
62 Correct 9 ms 5240 KB ok, correct split
63 Correct 8 ms 5240 KB ok, correct split
64 Correct 8 ms 5240 KB ok, correct split
65 Correct 8 ms 5240 KB ok, correct split
66 Correct 11 ms 5112 KB ok, correct split
67 Correct 8 ms 5240 KB ok, correct split
68 Correct 7 ms 5112 KB ok, correct split
69 Correct 6 ms 5112 KB ok, correct split
70 Correct 6 ms 5112 KB ok, correct split
71 Correct 9 ms 5240 KB ok, correct split
72 Correct 9 ms 5240 KB ok, correct split
73 Correct 7 ms 5112 KB ok, correct split
74 Correct 10 ms 5368 KB ok, correct split
75 Correct 10 ms 5368 KB ok, correct split
76 Correct 10 ms 5496 KB ok, correct split
77 Correct 10 ms 5496 KB ok, correct split
78 Correct 9 ms 5240 KB ok, correct split
79 Incorrect 8 ms 5368 KB 2 components are not connected
80 Halted 0 ms 0 KB -