oj.uz

Submission #250227

# Submission time Handle Problem Language Result Execution time Memory
250227 2020-07-17T08:55:48 Z srvlt Simurgh (IOI17_simurgh) C++14
51 / 100
 192 ms 6400 KB 
#include "simurgh.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define SZ(x) (int)(x).size()

const int n0 = 243, m0 = 29000;
int N, M, used[n0], ch[m0], par[n0], sp[m0], same[m0];
int in[n0], out[n0], T, common;
vector <int> g[n0], V, U, query;

void dfs(int v) {
	used[v] = 1;
	in[v] = ++T;
	for (int i : g[v]) {
		int to = V[i] ^ U[i] ^ v;
		if (used[to]) continue;
		par[to] = i;
		query.pb(i);
		sp[i] =  1;
		dfs(to);
	}
	out[v] = T;
}

bool upper(int v, int u) {
	return in[v] <= in[u] && out[u] <= out[v];
}

void add(int x) {
	query.pb(x);
}

void del(int x) {
	for (int i = 0; i < SZ(query); i++) {
		if (query[i] == x) {
			query.erase(query.begin() + i);
			break;
		}
	}
}

vector<int> find_roads(int n, vector<int> u, vector<int> v) {
	memset(& ch, -1, sizeof(ch));
	N = n, M = u.size(), V = v, U = u;
	for (int i = 0; i < M; i++)
		g[v[i]].pb(i), g[u[i]].pb(i);
	dfs(0);
	vector <int> path;
	common = count_common_roads(query);
	for (int i = 0; i < M; i++) {
		if (sp[i]) continue;
		int a = v[i], b = u[i];
		if (upper(b, a)) swap(a, b);
		path.clear();
		while (b != a) {
			path.pb(par[b]);
			b = v[par[b]] ^ u[par[b]] ^ b;
		}
		add(i);
		for (int j : path) {
			if (ch[i] != -1 && ch[j] != -1) continue;
			del(j);
			int x = count_common_roads(query);
			if (x == common) {
				if (ch[j] != -1) ch[i] = ch[j];
				same[j] = 1;
			}	else {
				if (x == common - 1) {
					ch[i] = 0;
					ch[j] = 1;
				}
				if (x == common + 1) {
					ch[i] = 1;
					ch[j] = 0;
				}
			}
			add(j);
		}
		if (ch[i] == -1) ch[i] = 0;
		del(i);
		for (int j : path) {
			if (same[j]) ch[j] = ch[i];
			same[j] = 0;
		}
	}
	vector <int> res;
	for (int i = 0; i < M; i++) {
		if (ch[i] == -1) ch[i] = 1;
		if (ch[i] == 1) res.pb(i);
	}
	return res;
}

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 416 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 0 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 1 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 0 ms 384 KB correct
13 Correct 1 ms 384 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 416 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 0 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 1 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 0 ms 384 KB correct
13 Correct 1 ms 384 KB correct
14 Correct 3 ms 512 KB correct
15 Correct 3 ms 512 KB correct
16 Correct 3 ms 512 KB correct
17 Correct 2 ms 512 KB correct
18 Correct 1 ms 512 KB correct
19 Correct 2 ms 512 KB correct
20 Correct 2 ms 512 KB correct
21 Correct 2 ms 512 KB correct
22 Correct 2 ms 512 KB correct
23 Correct 2 ms 512 KB correct
24 Correct 2 ms 512 KB correct
25 Correct 1 ms 384 KB correct
26 Correct 1 ms 512 KB correct
27 Correct 2 ms 512 KB correct
28 Correct 1 ms 512 KB correct
29 Correct 1 ms 512 KB correct
30 Correct 2 ms 512 KB correct
31 Correct 2 ms 512 KB correct
32 Correct 2 ms 512 KB correct
33 Correct 2 ms 512 KB correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 416 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 0 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 1 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 0 ms 384 KB correct
13 Correct 1 ms 384 KB correct
14 Correct 3 ms 512 KB correct
15 Correct 3 ms 512 KB correct
16 Correct 3 ms 512 KB correct
17 Correct 2 ms 512 KB correct
18 Correct 1 ms 512 KB correct
19 Correct 2 ms 512 KB correct
20 Correct 2 ms 512 KB correct
21 Correct 2 ms 512 KB correct
22 Correct 2 ms 512 KB correct
23 Correct 2 ms 512 KB correct
24 Correct 2 ms 512 KB correct
25 Correct 1 ms 384 KB correct
26 Correct 1 ms 512 KB correct
27 Correct 2 ms 512 KB correct
28 Correct 1 ms 512 KB correct
29 Correct 1 ms 512 KB correct
30 Correct 2 ms 512 KB correct
31 Correct 2 ms 512 KB correct
32 Correct 2 ms 512 KB correct
33 Correct 2 ms 512 KB correct
34 Correct 192 ms 1408 KB correct
35 Correct 188 ms 1408 KB correct
36 Correct 127 ms 1400 KB correct
37 Correct 8 ms 512 KB correct
38 Correct 190 ms 1408 KB correct
39 Correct 162 ms 1408 KB correct
40 Correct 126 ms 1280 KB correct
41 Correct 188 ms 1516 KB correct
42 Correct 191 ms 1408 KB correct
43 Correct 96 ms 1144 KB correct
44 Correct 76 ms 896 KB correct
45 Correct 91 ms 1024 KB correct
46 Correct 68 ms 1016 KB correct
47 Correct 28 ms 640 KB correct
48 Correct 2 ms 512 KB correct
49 Correct 8 ms 512 KB correct
50 Correct 29 ms 760 KB correct
51 Correct 89 ms 1024 KB correct
52 Correct 79 ms 896 KB correct
53 Correct 65 ms 896 KB correct
54 Correct 99 ms 1024 KB correct
55 Correct 94 ms 1144 KB correct
56 Correct 95 ms 1024 KB correct
57 Correct 96 ms 1028 KB correct

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 384 KB correct
3 Runtime error 28 ms 6400 KB Execution killed with signal 11 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB correct
2 Correct 0 ms 416 KB correct
3 Correct 1 ms 384 KB correct
4 Correct 0 ms 384 KB correct
5 Correct 1 ms 384 KB correct
6 Correct 0 ms 384 KB correct
7 Correct 0 ms 384 KB correct
8 Correct 0 ms 384 KB correct
9 Correct 1 ms 384 KB correct
10 Correct 0 ms 384 KB correct
11 Correct 1 ms 384 KB correct
12 Correct 0 ms 384 KB correct
13 Correct 1 ms 384 KB correct
14 Correct 3 ms 512 KB correct
15 Correct 3 ms 512 KB correct
16 Correct 3 ms 512 KB correct
17 Correct 2 ms 512 KB correct
18 Correct 1 ms 512 KB correct
19 Correct 2 ms 512 KB correct
20 Correct 2 ms 512 KB correct
21 Correct 2 ms 512 KB correct
22 Correct 2 ms 512 KB correct
23 Correct 2 ms 512 KB correct
24 Correct 2 ms 512 KB correct
25 Correct 1 ms 384 KB correct
26 Correct 1 ms 512 KB correct
27 Correct 2 ms 512 KB correct
28 Correct 1 ms 512 KB correct
29 Correct 1 ms 512 KB correct
30 Correct 2 ms 512 KB correct
31 Correct 2 ms 512 KB correct
32 Correct 2 ms 512 KB correct
33 Correct 2 ms 512 KB correct
34 Correct 192 ms 1408 KB correct
35 Correct 188 ms 1408 KB correct
36 Correct 127 ms 1400 KB correct
37 Correct 8 ms 512 KB correct
38 Correct 190 ms 1408 KB correct
39 Correct 162 ms 1408 KB correct
40 Correct 126 ms 1280 KB correct
41 Correct 188 ms 1516 KB correct
42 Correct 191 ms 1408 KB correct
43 Correct 96 ms 1144 KB correct
44 Correct 76 ms 896 KB correct
45 Correct 91 ms 1024 KB correct
46 Correct 68 ms 1016 KB correct
47 Correct 28 ms 640 KB correct
48 Correct 2 ms 512 KB correct
49 Correct 8 ms 512 KB correct
50 Correct 29 ms 760 KB correct
51 Correct 89 ms 1024 KB correct
52 Correct 79 ms 896 KB correct
53 Correct 65 ms 896 KB correct
54 Correct 99 ms 1024 KB correct
55 Correct 94 ms 1144 KB correct
56 Correct 95 ms 1024 KB correct
57 Correct 96 ms 1028 KB correct
58 Correct 0 ms 384 KB correct
59 Correct 0 ms 384 KB correct
60 Runtime error 28 ms 6400 KB Execution killed with signal 11 (could be triggered by violating memory limits)
61 Halted 0 ms 0 KB -