Submission #760826

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
760826	2023-06-18T15:42:17 Z	Sohsoh84	Parachute rings (IOI12_rings)	C++17	100 / 100	1508 ms	114196 KB

rings

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int, int> pll;

#define X		first
#define Y		second
#define debug(x)	cerr << #x << ": " << x << endl;

const ll MAXN = 1e6 + 10;
const ll MAXC = 5;

int n, mx[MAXC], par[MAXC][MAXN], ig[MAXN], deg[MAXC][MAXN], sz[MAXC][MAXN], 
    cyc_cnt[MAXC], cyc_sz[MAXC], cmp = 1;
bool deg_ex;
vector<int> poss, adj[MAXN];
vector<pll> edges;

int find(int ind, int v) {
	return par[ind][v] == v ? v : par[ind][v] = find(ind, par[ind][v]);
}

inline void unite(int ind, int u, int v) {
	if (u == ig[ind] || v == ig[ind]) return;

	deg[ind][u]++;
	deg[ind][v]++;
	mx[ind] = max(mx[ind], deg[ind][u]);
	mx[ind] = max(mx[ind], deg[ind][v]);

	u = find(ind, u), v = find(ind, v);
	if (u == v) {
		cyc_cnt[ind]++;
		cyc_sz[ind] += sz[ind][u];
		return;
	}

	par[ind][v] = u;
	sz[ind][u] += sz[ind][v];
}

inline void init(int ind, int v = 0) {
	ig[ind] = v;
	for (int i = 1; i <= n; i++) {
		par[ind][i] = i;
		sz[ind][i] = 1;
		deg[ind][i] = 0;
	}

	mx[ind] = 0;
	cyc_cnt[ind] = 0;
	cyc_sz[ind] = 0;
	for (auto [u, v] : edges)
		unite(ind, u, v);
}

void Init(int N_) {
	n = N_;
	deg_ex = false;
	init(0);
}

inline void check(int v) {
	if (deg_ex) return;
	if (int(adj[v].size()) > 2) {
		deg_ex = true;
		poss.push_back(v);
		for (int u : adj[v]) poss.push_back(u);

		cmp = poss.size();
		for (int i = 0; i < cmp; i++)
			init(i, poss[i]);
	}
}

void Link(int u, int v) {
	u++;
	v++;
	adj[u].push_back(v);
	adj[v].push_back(u);

	check(u);
	check(v);

	for (int i = 0; i < cmp; i++)
		unite(i, u, v);

	edges.push_back({u, v});
}

int CountCritical() {
	if (!deg_ex) {
		if (cyc_cnt[0] == 0) return n;
		else if (cyc_cnt[0] == 1) return cyc_sz[0];
		return 0;
	}

	int ans = 0;
	for (int i = 0; i < cmp; i++)
		if (mx[i] <= 2 && cyc_cnt[i] == 0)
			ans++;

	return ans;
}

Subtask #1
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	23764 KB	Output is correct
2	Correct	12 ms	24276 KB	Output is correct
3	Correct	14 ms	24404 KB	Output is correct
4	Correct	12 ms	23764 KB	Output is correct
5	Correct	12 ms	23892 KB	Output is correct
6	Correct	13 ms	24124 KB	Output is correct
7	Correct	12 ms	24136 KB	Output is correct
8	Correct	13 ms	24092 KB	Output is correct
9	Correct	14 ms	24364 KB	Output is correct
10	Correct	13 ms	24352 KB	Output is correct

Subtask #2
17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	243 ms	50196 KB	Output is correct
2	Correct	941 ms	92724 KB	Output is correct
3	Correct	1508 ms	105368 KB	Output is correct
4	Correct	790 ms	74636 KB	Output is correct
5	Correct	807 ms	74652 KB	Output is correct
6	Correct	784 ms	73536 KB	Output is correct
7	Correct	1424 ms	104504 KB	Output is correct
8	Correct	1033 ms	104448 KB	Output is correct
9	Correct	1047 ms	109812 KB	Output is correct
10	Correct	511 ms	73004 KB	Output is correct

Subtask #3
18.0 / 18.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	23764 KB	Output is correct
2	Correct	12 ms	24276 KB	Output is correct
3	Correct	14 ms	24404 KB	Output is correct
4	Correct	12 ms	23764 KB	Output is correct
5	Correct	12 ms	23892 KB	Output is correct
6	Correct	13 ms	24124 KB	Output is correct
7	Correct	12 ms	24136 KB	Output is correct
8	Correct	13 ms	24092 KB	Output is correct
9	Correct	14 ms	24364 KB	Output is correct
10	Correct	13 ms	24352 KB	Output is correct
11	Correct	14 ms	24404 KB	Output is correct
12	Correct	16 ms	24892 KB	Output is correct
13	Correct	19 ms	24904 KB	Output is correct
14	Correct	15 ms	24660 KB	Output is correct
15	Correct	15 ms	25140 KB	Output is correct
16	Correct	14 ms	24404 KB	Output is correct
17	Correct	16 ms	24916 KB	Output is correct
18	Correct	16 ms	25432 KB	Output is correct
19	Correct	15 ms	24512 KB	Output is correct
20	Correct	16 ms	24908 KB	Output is correct

Subtask #4
14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	23764 KB	Output is correct
2	Correct	12 ms	24276 KB	Output is correct
3	Correct	14 ms	24404 KB	Output is correct
4	Correct	12 ms	23764 KB	Output is correct
5	Correct	12 ms	23892 KB	Output is correct
6	Correct	13 ms	24124 KB	Output is correct
7	Correct	12 ms	24136 KB	Output is correct
8	Correct	13 ms	24092 KB	Output is correct
9	Correct	14 ms	24364 KB	Output is correct
10	Correct	13 ms	24352 KB	Output is correct
11	Correct	14 ms	24404 KB	Output is correct
12	Correct	16 ms	24892 KB	Output is correct
13	Correct	19 ms	24904 KB	Output is correct
14	Correct	15 ms	24660 KB	Output is correct
15	Correct	15 ms	25140 KB	Output is correct
16	Correct	14 ms	24404 KB	Output is correct
17	Correct	16 ms	24916 KB	Output is correct
18	Correct	16 ms	25432 KB	Output is correct
19	Correct	15 ms	24512 KB	Output is correct
20	Correct	16 ms	24908 KB	Output is correct
21	Correct	25 ms	25952 KB	Output is correct
22	Correct	33 ms	27232 KB	Output is correct
23	Correct	38 ms	28124 KB	Output is correct
24	Correct	49 ms	30968 KB	Output is correct
25	Correct	26 ms	29288 KB	Output is correct
26	Correct	46 ms	31764 KB	Output is correct
27	Correct	46 ms	29124 KB	Output is correct
28	Correct	50 ms	32496 KB	Output is correct
29	Correct	46 ms	30928 KB	Output is correct
30	Correct	47 ms	29928 KB	Output is correct

Subtask #5
31.0 / 31.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	11 ms	23764 KB	Output is correct
2	Correct	12 ms	24276 KB	Output is correct
3	Correct	14 ms	24404 KB	Output is correct
4	Correct	12 ms	23764 KB	Output is correct
5	Correct	12 ms	23892 KB	Output is correct
6	Correct	13 ms	24124 KB	Output is correct
7	Correct	12 ms	24136 KB	Output is correct
8	Correct	13 ms	24092 KB	Output is correct
9	Correct	14 ms	24364 KB	Output is correct
10	Correct	13 ms	24352 KB	Output is correct
11	Correct	243 ms	50196 KB	Output is correct
12	Correct	941 ms	92724 KB	Output is correct
13	Correct	1508 ms	105368 KB	Output is correct
14	Correct	790 ms	74636 KB	Output is correct
15	Correct	807 ms	74652 KB	Output is correct
16	Correct	784 ms	73536 KB	Output is correct
17	Correct	1424 ms	104504 KB	Output is correct
18	Correct	1033 ms	104448 KB	Output is correct
19	Correct	1047 ms	109812 KB	Output is correct
20	Correct	511 ms	73004 KB	Output is correct
21	Correct	14 ms	24404 KB	Output is correct
22	Correct	16 ms	24892 KB	Output is correct
23	Correct	19 ms	24904 KB	Output is correct
24	Correct	15 ms	24660 KB	Output is correct
25	Correct	15 ms	25140 KB	Output is correct
26	Correct	14 ms	24404 KB	Output is correct
27	Correct	16 ms	24916 KB	Output is correct
28	Correct	16 ms	25432 KB	Output is correct
29	Correct	15 ms	24512 KB	Output is correct
30	Correct	16 ms	24908 KB	Output is correct
31	Correct	25 ms	25952 KB	Output is correct
32	Correct	33 ms	27232 KB	Output is correct
33	Correct	38 ms	28124 KB	Output is correct
34	Correct	49 ms	30968 KB	Output is correct
35	Correct	26 ms	29288 KB	Output is correct
36	Correct	46 ms	31764 KB	Output is correct
37	Correct	46 ms	29124 KB	Output is correct
38	Correct	50 ms	32496 KB	Output is correct
39	Correct	46 ms	30928 KB	Output is correct
40	Correct	47 ms	29928 KB	Output is correct
41	Correct	160 ms	43308 KB	Output is correct
42	Correct	392 ms	89396 KB	Output is correct
43	Correct	239 ms	74768 KB	Output is correct
44	Correct	833 ms	114196 KB	Output is correct
45	Correct	1000 ms	106020 KB	Output is correct
46	Correct	479 ms	77860 KB	Output is correct
47	Correct	705 ms	78876 KB	Output is correct
48	Correct	522 ms	96300 KB	Output is correct
49	Correct	493 ms	76948 KB	Output is correct
50	Correct	542 ms	76452 KB	Output is correct
51	Correct	289 ms	71100 KB	Output is correct
52	Correct	718 ms	97168 KB	Output is correct
53	Correct	525 ms	96688 KB	Output is correct
54	Correct	943 ms	104864 KB	Output is correct
55	Correct	1182 ms	111836 KB	Output is correct

Submission #760826

Compilation message

Subtask #1 20.0 / 20.0

Subtask #2 17.0 / 17.0

Subtask #3 18.0 / 18.0

Subtask #4 14.0 / 14.0

Subtask #5 31.0 / 31.0

Subtask #1
20.0 / 20.0

Subtask #2
17.0 / 17.0

Subtask #3
18.0 / 18.0

Subtask #4
14.0 / 14.0

Subtask #5
31.0 / 31.0