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Submission #1073781

# Submission time Handle Problem Language Result Execution time Memory
1073781 2024-08-24T20:53:39 Z allin27x Stations (IOI20_stations) C++17
76 / 100
 655 ms 1420 KB 
#include <bits/stdc++.h>
using namespace std;
#include "stations.h"

const int N = 1001;
vector<int> adj[N];
int tin[N];
int tout[N];
vector<int> order;

void dfs(int i, int p, int tp) {
	if (!tp) order.push_back(i);
	else order.push_back(-1);
	for (int c: adj[i]) {
		if (c == p) continue;
		dfs(c,i, !tp);
	}
	if (tp) order.push_back(i);
	else order.push_back(-1);
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	order.clear(); for (int i=0; i<n; i++) adj[i].clear();
	std::vector<int> labels(n);
	for (int i=0; i<n-1; i++) {
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}
	dfs(0,0,0);
	for (int i=0; i<2*n; i++) if (order[i]!=-1) labels[order[i]] = i;
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	if (s > c[0]) {
		// s is time-out, all neighbors are time-in
		// c[0] is the parent
		int n = c.size();
		vector<int> tout(n);
		for (int i=1; i<n-1; i++) {
			tout[i] = c[i+1] - 1;
		}
		tout[n-1] = s - 1;
		for (int i=1; i<n; i++) {
			if (c[i] <= t && t<=tout[i]) return c[i];
		}
		return c[0];
	} else {
		// s is time-in, all neighbors are time-out
		// c[n-1] is the parent
		int n = c.size();
		vector<int> tin(n);
		for (int i=n-2; i>0; i--) {
			tin[i] = c[i-1] + 1;
		}
		tin[0] = s + 1;
		for (int i=0; i<n-1; i++) {
			if (tin[i] <= t && t<=c[i]) return c[i];
		}
		return c[n-1];
	}
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 596 KB Invalid labels (values out of range). scenario=2, k=1000, vertex=1, label=1990
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 344 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=1, label=1022
2 Halted 0 ms 0 KB -

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 393 ms 940 KB Output is correct
2 Correct 308 ms 932 KB Output is correct
3 Correct 611 ms 684 KB Output is correct
4 Correct 464 ms 684 KB Output is correct
5 Correct 374 ms 684 KB Output is correct
6 Correct 300 ms 940 KB Output is correct
7 Correct 337 ms 684 KB Output is correct
8 Correct 1 ms 768 KB Output is correct
9 Correct 2 ms 1020 KB Output is correct
10 Correct 0 ms 768 KB Output is correct
11 Correct 420 ms 684 KB Output is correct
12 Correct 299 ms 1048 KB Output is correct
13 Correct 333 ms 1296 KB Output is correct
14 Correct 332 ms 684 KB Output is correct
15 Correct 30 ms 764 KB Output is correct
16 Correct 32 ms 768 KB Output is correct
17 Correct 66 ms 744 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 628 ms 684 KB Output is correct
2 Correct 458 ms 684 KB Output is correct
3 Correct 396 ms 684 KB Output is correct
4 Correct 1 ms 772 KB Output is correct
5 Correct 2 ms 776 KB Output is correct
6 Correct 0 ms 768 KB Output is correct
7 Correct 399 ms 684 KB Output is correct
8 Correct 602 ms 684 KB Output is correct
9 Correct 417 ms 684 KB Output is correct
10 Correct 381 ms 684 KB Output is correct
11 Correct 2 ms 776 KB Output is correct
12 Correct 2 ms 768 KB Output is correct
13 Correct 2 ms 768 KB Output is correct
14 Correct 1 ms 780 KB Output is correct
15 Correct 0 ms 768 KB Output is correct
16 Correct 357 ms 680 KB Output is correct
17 Correct 330 ms 684 KB Output is correct
18 Correct 331 ms 684 KB Output is correct
19 Correct 347 ms 684 KB Output is correct
20 Correct 354 ms 684 KB Output is correct

Subtask #5
50.0 / 61.0

# Verdict Execution time Memory Grader output
1 Partially correct 338 ms 932 KB Partially correct
2 Partially correct 306 ms 932 KB Partially correct
3 Correct 629 ms 684 KB Output is correct
4 Correct 432 ms 684 KB Output is correct
5 Correct 373 ms 684 KB Output is correct
6 Partially correct 310 ms 1192 KB Partially correct
7 Partially correct 324 ms 684 KB Partially correct
8 Correct 2 ms 768 KB Output is correct
9 Correct 2 ms 776 KB Output is correct
10 Correct 0 ms 768 KB Output is correct
11 Partially correct 327 ms 684 KB Partially correct
12 Partially correct 378 ms 684 KB Partially correct
13 Correct 655 ms 684 KB Output is correct
14 Correct 440 ms 688 KB Output is correct
15 Correct 411 ms 684 KB Output is correct
16 Partially correct 317 ms 684 KB Partially correct
17 Correct 411 ms 684 KB Output is correct
18 Partially correct 302 ms 804 KB Partially correct
19 Partially correct 310 ms 1064 KB Partially correct
20 Partially correct 281 ms 684 KB Partially correct
21 Correct 29 ms 768 KB Output is correct
22 Partially correct 35 ms 764 KB Partially correct
23 Partially correct 51 ms 716 KB Partially correct
24 Correct 2 ms 772 KB Output is correct
25 Correct 2 ms 772 KB Output is correct
26 Correct 2 ms 768 KB Output is correct
27 Correct 2 ms 768 KB Output is correct
28 Correct 0 ms 768 KB Output is correct
29 Correct 345 ms 684 KB Output is correct
30 Correct 329 ms 684 KB Output is correct
31 Correct 356 ms 684 KB Output is correct
32 Correct 355 ms 932 KB Output is correct
33 Correct 357 ms 684 KB Output is correct
34 Partially correct 235 ms 916 KB Partially correct
35 Partially correct 302 ms 932 KB Partially correct
36 Partially correct 296 ms 936 KB Partially correct
37 Partially correct 319 ms 816 KB Partially correct
38 Partially correct 308 ms 796 KB Partially correct
39 Partially correct 302 ms 1420 KB Partially correct
40 Partially correct 293 ms 1032 KB Partially correct
41 Partially correct 336 ms 1304 KB Partially correct
42 Partially correct 32 ms 768 KB Partially correct
43 Partially correct 58 ms 760 KB Partially correct
44 Partially correct 90 ms 684 KB Partially correct
45 Partially correct 102 ms 684 KB Partially correct
46 Partially correct 208 ms 684 KB Partially correct
47 Partially correct 239 ms 684 KB Partially correct
48 Partially correct 39 ms 1060 KB Partially correct
49 Partially correct 28 ms 764 KB Partially correct