oj.uz

Submission #1106584

# Submission time Handle Problem Language Result Execution time Memory
1106584 2024-10-30T16:56:11 Z Octagons Sphinx's Riddle (IOI24_sphinx) C++17
50 / 100
 790 ms 2292 KB 
#include <bits/stdc++.h>
using namespace std;
#include "sphinx.h"
//#include "grader.cpp"
#define sz(x) int(x.size())
int n, mmo;
int p[255], sz[255], p2[255], sz2[255], idxo = 1;
vector<int> adj57[255], tr[255], bck[255];
int vis[255];
 
int findp2(int u) {
    return p2[u] = (p2[u] == u ? u : findp2(p2[u]));
}
 
bool merge2(int u, int v) {
    u = findp2(u), v = findp2(v);
    if (u == v)return false;
    if (sz2[u] < sz2[v])swap(u, v);
    sz2[u] += sz2[v];
    p2[v] = u;
	return true;
}
 
int findp(int u) {
    return p[u] = (p[u] == u ? u : findp(p[u]));
}
 
void merge(int u, int v) {
    u = findp(u), v = findp(v);
    if (u == v)return;
    if (sz[u] < sz[v])swap(u, v);
    sz[u] += sz[v];
    p[v] = u;
}
 
bool chk(vector<int> v) {
	for (int i = 0; i < n; i++) {
		p2[i] = i;
		sz2[i] = 1;
	}
	int comps = n;
	for (int i = 0; i < n; i++) {
		for (auto &vv : adj57[i]) {
			if (~v[i] && v[i] == v[vv]) {
				comps -= merge2(i, vv);
			} else if (v[i] == -1 && v[vv] == -1 && findp(i) == findp(vv)) {
				comps -= merge2(i, vv);
			}
		}
	}
	int x = perform_experiment(v);
	return (comps > x);
}
 
bool chk2(int u, int v) {
	for (int i = 0; i < n; i++) {
		p2[i] = i;
		sz2[i] = 1;
	}
	int comps = n;
	vector<int> e(n, n);
	e[u] = e[v] = -1;
	for (int i = 0; i < n; i++) {
		for (auto &vv : adj57[i]) {
			if (e[i] == e[vv]) {
				comps -= merge2(i, vv);
			}
		}
	}
	int x = perform_experiment(e);
	return (comps == x);
}
 
void init(int u, int pr) {
	vis[u] = idxo++;
	for (auto &v : adj57[u]) {
		if (v == pr)continue;
		if (vis[v]) {
			if (vis[v] < vis[u])bck[u].push_back(v);
			continue;
		}
		init(v, u);
		tr[u].push_back(v);
	}
}
 
void soly(int u, vector<int> vvo) {
	if (vvo.empty())return;
	int l = 0, r = int(vvo.size()) - 1, id = -1;
	while (l <= r) {
		int m = (l + r) >> 1;
		vector<int> e(n, n);
		for (int j = 0; j <= m; j++) {
			for (int i = 0; i < n; i++) {
				if (findp(i) == vvo[j])e[i] = -1;
			}
		}
		e[u] = -1;
		if (chk(e)) {
			id = m;
			r = m-1;
		} else {
			l = m+1;
		}
	}
	if (~id) {
		merge(u, vvo[id]);
	} else {
		return;
	}
	vector<int> xx;
	for (int i = id+1; i < sz(vvo); i++) {
		xx.push_back(vvo[i]);
	}
	soly(u, xx);
}
 
void dfs(int u) {
	vector<int> vvo;
	for (auto &v : bck[u]) {
		if (findp(v) != findp(u))vvo.push_back(findp(v));
	}
	sort(vvo.begin(), vvo.end());
	vvo.erase(unique(vvo.begin(), vvo.end()), vvo.end());
	soly(u, vvo);
	for (auto &v : tr[u]) {
		if (chk2(u, v)) {
			merge(u, v);
		}
		dfs(v);
	}
}
 
std::vector<int> find_colours(int NH, std::vector<int> X, std::vector<int> Y) {
    n = NH;
    vector<int> ret(n, 0);
    for (int i = 0; i < n; i++) {
      p[i] = i;
      sz[i] = 1;
	  adj57[i].clear();
	  tr[i].clear();
	  bck[i].clear();
	  vis[i] = 0;
    }
    for (int i = 0; i < X.size(); i++) {
      int u = X[i], v = Y[i];
      adj57[u].push_back(v);
      adj57[v].push_back(u);
    }
	mmo = X.size();
	init(0, 0);
	dfs(0);
    for (int i = 0; i < n; i++) {
      ret[i] = findp(i);
    }
    return ret;
}

Compilation message

sphinx.cpp: In function 'std::vector<int> find_colours(int, std::vector<int>, std::vector<int>)':
sphinx.cpp:145:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  145 |     for (int i = 0; i < X.size(); i++) {
      |                     ~~^~~~~~~~~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 336 KB Partially correct

Subtask #1
1.5 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB #experiments: 1
2 Correct 0 ms 336 KB #experiments: 1
3 Partially correct 1 ms 336 KB Partially correct
4 Partially correct 1 ms 336 KB Partially correct

Subtask #2
3.5 / 7.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 336 KB Partially correct
2 Correct 1 ms 336 KB #experiments: 1
3 Correct 0 ms 336 KB #experiments: 1
4 Partially correct 1 ms 336 KB Partially correct
5 Partially correct 1 ms 336 KB Partially correct
6 Partially correct 1 ms 336 KB Partially correct
7 Partially correct 1 ms 336 KB Partially correct
8 Partially correct 1 ms 336 KB Partially correct
9 Partially correct 1 ms 336 KB Partially correct
10 Partially correct 1 ms 336 KB Partially correct
11 Partially correct 1 ms 336 KB Partially correct
12 Partially correct 1 ms 336 KB Partially correct
13 Partially correct 1 ms 336 KB Partially correct
14 Partially correct 2 ms 336 KB Partially correct
15 Partially correct 8 ms 336 KB Partially correct
16 Partially correct 6 ms 336 KB Partially correct
17 Partially correct 7 ms 520 KB Partially correct
18 Partially correct 7 ms 512 KB Partially correct
19 Partially correct 11 ms 336 KB Partially correct
20 Partially correct 7 ms 516 KB Partially correct
21 Partially correct 9 ms 336 KB Partially correct
22 Partially correct 4 ms 336 KB Partially correct
23 Partially correct 4 ms 336 KB Partially correct
24 Partially correct 4 ms 484 KB Partially correct
25 Partially correct 4 ms 336 KB Partially correct
26 Partially correct 1 ms 336 KB Partially correct
27 Partially correct 1 ms 336 KB Partially correct
28 Partially correct 1 ms 336 KB Partially correct
29 Partially correct 3 ms 480 KB Partially correct
30 Partially correct 4 ms 336 KB Partially correct
31 Partially correct 7 ms 336 KB Partially correct
32 Partially correct 8 ms 336 KB Partially correct
33 Partially correct 2 ms 336 KB Partially correct
34 Partially correct 8 ms 500 KB Partially correct

Subtask #3
16.5 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB #experiments: 1
2 Correct 0 ms 336 KB #experiments: 1
3 Partially correct 1 ms 336 KB Partially correct
4 Partially correct 1 ms 336 KB Partially correct
5 Partially correct 1 ms 336 KB Partially correct
6 Partially correct 1 ms 336 KB Partially correct
7 Partially correct 1 ms 336 KB Partially correct
8 Partially correct 1 ms 336 KB Partially correct
9 Partially correct 1 ms 336 KB Partially correct
10 Partially correct 1 ms 336 KB Partially correct
11 Partially correct 1 ms 336 KB Partially correct
12 Partially correct 1 ms 336 KB Partially correct
13 Partially correct 7 ms 336 KB Partially correct
14 Partially correct 6 ms 592 KB Partially correct
15 Partially correct 6 ms 592 KB Partially correct
16 Partially correct 7 ms 592 KB Partially correct
17 Partially correct 6 ms 336 KB Partially correct
18 Partially correct 8 ms 848 KB Partially correct
19 Partially correct 8 ms 336 KB Partially correct
20 Partially correct 9 ms 528 KB Partially correct
21 Partially correct 7 ms 508 KB Partially correct

Subtask #4
10.5 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB #experiments: 1
2 Correct 0 ms 336 KB #experiments: 1
3 Partially correct 1 ms 336 KB Partially correct
4 Partially correct 1 ms 336 KB Partially correct
5 Partially correct 2 ms 336 KB Partially correct
6 Partially correct 8 ms 336 KB Partially correct
7 Partially correct 6 ms 336 KB Partially correct
8 Partially correct 7 ms 520 KB Partially correct
9 Partially correct 7 ms 512 KB Partially correct
10 Partially correct 11 ms 336 KB Partially correct
11 Partially correct 7 ms 516 KB Partially correct
12 Partially correct 9 ms 336 KB Partially correct
13 Partially correct 181 ms 1404 KB Partially correct
14 Partially correct 387 ms 1656 KB Partially correct
15 Partially correct 561 ms 1752 KB Partially correct
16 Partially correct 659 ms 1512 KB Partially correct
17 Partially correct 742 ms 1608 KB Partially correct
18 Partially correct 667 ms 1944 KB Partially correct
19 Partially correct 640 ms 2292 KB Partially correct
20 Partially correct 88 ms 1400 KB Partially correct
21 Partially correct 491 ms 2188 KB Partially correct

Subtask #5
18.0 / 36.0

# Verdict Execution time Memory Grader output
1 Partially correct 1 ms 336 KB Partially correct
2 Correct 1 ms 336 KB #experiments: 1
3 Correct 0 ms 336 KB #experiments: 1
4 Partially correct 1 ms 336 KB Partially correct
5 Partially correct 1 ms 336 KB Partially correct
6 Partially correct 1 ms 336 KB Partially correct
7 Partially correct 1 ms 336 KB Partially correct
8 Partially correct 1 ms 336 KB Partially correct
9 Partially correct 1 ms 336 KB Partially correct
10 Partially correct 1 ms 336 KB Partially correct
11 Partially correct 1 ms 336 KB Partially correct
12 Partially correct 1 ms 336 KB Partially correct
13 Partially correct 1 ms 336 KB Partially correct
14 Partially correct 2 ms 336 KB Partially correct
15 Partially correct 8 ms 336 KB Partially correct
16 Partially correct 6 ms 336 KB Partially correct
17 Partially correct 7 ms 520 KB Partially correct
18 Partially correct 7 ms 512 KB Partially correct
19 Partially correct 11 ms 336 KB Partially correct
20 Partially correct 7 ms 516 KB Partially correct
21 Partially correct 9 ms 336 KB Partially correct
22 Partially correct 4 ms 336 KB Partially correct
23 Partially correct 4 ms 336 KB Partially correct
24 Partially correct 4 ms 484 KB Partially correct
25 Partially correct 4 ms 336 KB Partially correct
26 Partially correct 1 ms 336 KB Partially correct
27 Partially correct 1 ms 336 KB Partially correct
28 Partially correct 1 ms 336 KB Partially correct
29 Partially correct 3 ms 480 KB Partially correct
30 Partially correct 4 ms 336 KB Partially correct
31 Partially correct 7 ms 336 KB Partially correct
32 Partially correct 8 ms 336 KB Partially correct
33 Partially correct 2 ms 336 KB Partially correct
34 Partially correct 8 ms 500 KB Partially correct
35 Partially correct 7 ms 336 KB Partially correct
36 Partially correct 6 ms 592 KB Partially correct
37 Partially correct 6 ms 592 KB Partially correct
38 Partially correct 7 ms 592 KB Partially correct
39 Partially correct 6 ms 336 KB Partially correct
40 Partially correct 8 ms 848 KB Partially correct
41 Partially correct 8 ms 336 KB Partially correct
42 Partially correct 9 ms 528 KB Partially correct
43 Partially correct 7 ms 508 KB Partially correct
44 Partially correct 181 ms 1404 KB Partially correct
45 Partially correct 387 ms 1656 KB Partially correct
46 Partially correct 561 ms 1752 KB Partially correct
47 Partially correct 659 ms 1512 KB Partially correct
48 Partially correct 742 ms 1608 KB Partially correct
49 Partially correct 667 ms 1944 KB Partially correct
50 Partially correct 640 ms 2292 KB Partially correct
51 Partially correct 88 ms 1400 KB Partially correct
52 Partially correct 491 ms 2188 KB Partially correct
53 Partially correct 58 ms 548 KB Partially correct
54 Partially correct 76 ms 584 KB Partially correct
55 Partially correct 71 ms 600 KB Partially correct
56 Partially correct 121 ms 840 KB Partially correct
57 Partially correct 333 ms 1096 KB Partially correct
58 Partially correct 284 ms 1140 KB Partially correct
59 Partially correct 274 ms 884 KB Partially correct
60 Partially correct 305 ms 1156 KB Partially correct
61 Partially correct 10 ms 336 KB Partially correct
62 Partially correct 6 ms 512 KB Partially correct
63 Partially correct 10 ms 336 KB Partially correct
64 Partially correct 84 ms 584 KB Partially correct
65 Partially correct 107 ms 592 KB Partially correct
66 Partially correct 84 ms 844 KB Partially correct
67 Partially correct 96 ms 848 KB Partially correct
68 Partially correct 98 ms 868 KB Partially correct
69 Partially correct 99 ms 840 KB Partially correct
70 Partially correct 94 ms 612 KB Partially correct
71 Partially correct 117 ms 864 KB Partially correct
72 Partially correct 37 ms 592 KB Partially correct
73 Partially correct 55 ms 336 KB Partially correct
74 Partially correct 75 ms 1080 KB Partially correct
75 Partially correct 79 ms 592 KB Partially correct
76 Partially correct 91 ms 596 KB Partially correct
77 Partially correct 99 ms 604 KB Partially correct
78 Partially correct 128 ms 624 KB Partially correct
79 Partially correct 111 ms 636 KB Partially correct
80 Partially correct 139 ms 636 KB Partially correct
81 Partially correct 147 ms 852 KB Partially correct
82 Partially correct 163 ms 840 KB Partially correct
83 Partially correct 576 ms 1492 KB Partially correct
84 Partially correct 790 ms 1608 KB Partially correct
85 Partially correct 31 ms 708 KB Partially correct
86 Partially correct 219 ms 1364 KB Partially correct