oj.uz

Submission #623590

# Submission time Handle Problem Language Result Execution time Memory
623590 2022-08-06T03:46:13 Z Temmie Keys (IOI21_keys) C++17
67 / 100
 3000 ms 285848 KB 
#include <bits/stdc++.h>

struct Dsu {
	
	std::vector <int> p;
	std::vector <int> size;
	
	Dsu(int s) {
		p.resize(s);
		std::iota(p.begin(), p.end(), 0);
		size.resize(s, 1);
	}
	
	int find(int v) {
		return v == p[v] ? v : (p[v] = find(p[v]));
	}
	
	void unite(int u, int v) {
		if ((u = find(u)) == (v = find(v))) {
			return;
		}
		p[u] = v;
		//if (size[u] > size[v]) {
			//p[v] = u;
		//} else {
			//p[u] = v;
		//}
	}
	
};

struct Edge {
	
	int u, v, c;
	
};

int n, m;
std::vector <Edge> ed;
std::vector <std::vector <int>> g;
//std::vector <int> p;
Dsu dsu(0), can(0);
std::vector <int> r;
std::vector <bool> last;

bool go() {
	//can = Dsu(n);
	static std::vector <std::map <int, std::vector <int>>> mp(n);
	static std::vector <std::set <int>> st(n);
	bool did = false;
	last.assign(n, false);
	for (int i = 0; i < n; i++) {
		if (dsu.find(i) != i) {
			continue;
		}
		std::queue <std::pair <int, int>> q ; q.push ({ i, i });
		while (q.size()) {
			int v = q.front().first;
			int p = q.front().second;
			q.pop();
			if (p != dsu.find(p)) {
				continue;
			}
			if (dsu.find(v) != dsu.find(p)) {
				did = true;
				dsu.unite(p, v);
				continue;
			}
			//if (can.find(v) == can.find(p)) {
				//continue;
			//}
			//can.unite(v, p);
			if (last[v]) {
				continue;
			}
			last[v] = true;
			for (int x : g[v]) {
				int to = ed[x].u ^ ed[x].v ^ v;
				if (st[p].count(ed[x].c)) {
					q.push({ to, p });
				} else {
					mp[p][ed[x].c].push_back(to);
				}
			}
			for (int x : mp[p][r[v]]) {
				q.push({ x, p });
			}
			st[p].insert(r[v]);
			mp[p][r[v]].clear();
		}
	}
	//std::vector <std::vector <int>> in(n);
	//for (int i = 0; i < n; i++) {
		//in[dsu.find(i)].push_back(i);
	//}
	//std::vector <std::vector <int>> ed_of(n);
	//bool did = false;
	//for (int j = 0; j < n; j++) {
		//int i = j;
		//if (dsu.find(i) != i || p[i] != -1) {
			//continue;
		//}
		//for (int v : in[i]) {
			//for (int x : g[v]) {
				//ed_of[ed[x].c].push_back(v ^ ed[x].v ^ ed[x].u);
			//}
		//}
		//std::vector <int> eds;
		//for (int x : in[i]) {
			//for (int y : ed_of[r[x]]) {
				//eds.push_back(y);
			//}
			//ed_of[r[x]].clear();
		//}
		//for (int x : eds) {
			//if (dsu.find(x) == i) {
				//continue;
			//}
			//did = true;
			//if (tree.find(x) == tree.find(i)) {
				//int to = dsu.find(x);
				//while (i != to) {
					//int new_to = dsu.find(p[to]);
					//p[i] = p[to] = p[i];
					//dsu.unite(to, i);
					//i = dsu.find(i);
					//to = new_to;
				//}
			//} else {
				//p[i] = dsu.find(x);
				//tree.unite(x, i);
				//break;
			//}
		//}
		//for (int v : in[i]) {
			//for (int x : g[v]) {
				//ed_of[ed[x].c].clear();
			//}
		//}
	//}
	
	//std::cerr << "did ?= " << did << std::endl;
	
	return did;
}

std::vector <int> find_reachable(std::vector <int> _r, std::vector <int> u, std::vector <int> v, std::vector <int> c) {
	r = _r;
	n = r.size();
	m = c.size();
	ed.resize(m);
	g.resize(n);
	for (int i = 0; i < m; i++) {
		g[u[i]].push_back(i);
		g[v[i]].push_back(i);
		ed[i] = { u[i], v[i], c[i] };
	}
	//p.resize(n, -1);
	dsu = Dsu(n);
	//tree = Dsu(n);
	int cnt = 0;
	while (go() && ++cnt < 135);// assert(++cnt < 100);
	//for (int i = 0; i < n; i++) std::cerr << dsu.find(i) << " \n"[i + 1 == n];
	std::vector <int> ans(n, 0);
	for (int i = 0; i < n; i++) {
		ans[dsu.find(i)] += last[i];// += p[dsu.find(i)] == -1;
	}
	int res = 1 << 30;
	for (int x : ans) {
		if (x) {
			res = std::min(res, x);
		}
	}
	std::vector <int> ret(n, 1);
	for (int i = 0; i < n; i++) {
		//if (ans[dsu.find(i)] == res) {
			//ret[i] = 1;
		//}
		if(!last[i] || res != ans[dsu.find(i)]) {
			ret[i] = 0;
		}
	}
	return ret;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 3 ms 1236 KB Output is correct
28 Correct 3 ms 1236 KB Output is correct
29 Correct 3 ms 1236 KB Output is correct
30 Correct 2 ms 852 KB Output is correct
31 Correct 1 ms 724 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 2 ms 724 KB Output is correct
34 Correct 1 ms 724 KB Output is correct
35 Correct 1 ms 724 KB Output is correct
36 Correct 2 ms 980 KB Output is correct
37 Correct 4 ms 1236 KB Output is correct
38 Correct 2 ms 1100 KB Output is correct
39 Correct 4 ms 1492 KB Output is correct
40 Correct 2 ms 852 KB Output is correct
41 Correct 3 ms 1108 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 396 ms 91056 KB Output is correct
11 Correct 355 ms 115644 KB Output is correct
12 Correct 98 ms 31184 KB Output is correct
13 Correct 570 ms 149264 KB Output is correct
14 Correct 256 ms 114180 KB Output is correct

Subtask #5
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 300 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 0 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 0 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 3 ms 1236 KB Output is correct
28 Correct 3 ms 1236 KB Output is correct
29 Correct 3 ms 1236 KB Output is correct
30 Correct 2 ms 852 KB Output is correct
31 Correct 1 ms 724 KB Output is correct
32 Correct 1 ms 468 KB Output is correct
33 Correct 2 ms 724 KB Output is correct
34 Correct 1 ms 724 KB Output is correct
35 Correct 1 ms 724 KB Output is correct
36 Correct 2 ms 980 KB Output is correct
37 Correct 4 ms 1236 KB Output is correct
38 Correct 2 ms 1100 KB Output is correct
39 Correct 4 ms 1492 KB Output is correct
40 Correct 2 ms 852 KB Output is correct
41 Correct 3 ms 1108 KB Output is correct
42 Correct 396 ms 91056 KB Output is correct
43 Correct 355 ms 115644 KB Output is correct
44 Correct 98 ms 31184 KB Output is correct
45 Correct 570 ms 149264 KB Output is correct
46 Correct 256 ms 114180 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 229 ms 111932 KB Output is correct
51 Correct 260 ms 114104 KB Output is correct
52 Correct 304 ms 103652 KB Output is correct
53 Correct 299 ms 103636 KB Output is correct
54 Correct 305 ms 103680 KB Output is correct
55 Correct 490 ms 107004 KB Output is correct
56 Correct 437 ms 139780 KB Output is correct
57 Correct 409 ms 136612 KB Output is correct
58 Correct 677 ms 144632 KB Output is correct
59 Correct 932 ms 149108 KB Output is correct
60 Correct 698 ms 141376 KB Output is correct
61 Correct 760 ms 145580 KB Output is correct
62 Execution timed out 3102 ms 285848 KB Time limit exceeded
63 Halted 0 ms 0 KB -