oj.uz

Submission #959072

# Submission time Handle Problem Language Result Execution time Memory
959072 2024-04-07T13:02:55 Z The_Samurai Stations (IOI20_stations) C++17
100 / 100
 603 ms 1408 KB 
#include "stations.h"
#include "bits/stdc++.h"
using namespace std;

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	vector<vector<int>> adj(n);
	vector<bool> vis(n);
	for (int i = 0; i < n - 1; i++) {
		adj[u[i]].emplace_back(v[i]);
		adj[v[i]].emplace_back(u[i]);
	}
	int z = 0;
	vector<int> h(n), tin(n), tout(n), ans(n);
	auto dfs = [&](auto &dfs, int u) -> void {
		if (h[u] % 2 == 0) tin[u] = z++;
		vis[u] = true;
		for (int v: adj[u]) {
			if (vis[v]) continue;
			h[v] = h[u] + 1;
			dfs(dfs, v);
		}
		if (h[u] % 2) tout[u] = z++;
	};
	dfs(dfs, 0);
	for (int i = 0; i < n; i++) ans[i] = h[i] % 2 ? tout[i] : tin[i];
	// for (int i = 0; i < n; i++) cout << ans[i] << ' ';
	// cout << endl;
	return ans;
}


int find_next_station(int s, int t, std::vector<int> c) {
	sort(c.begin(), c.end());
	// cout << '\t' << s << ' ' << t << endl;
	// cout << '\t';
	// for (int u: c) cout << u << ' ';
	// cout << endl;
	bool even = true;
	for (int u: c) even &= u > s;
	if (even) {
		for (int u: c) {
			if (s <= t and t <= u) return u;
		}
		return c.back();
	} else {
		reverse(c.begin(), c.end());
		for (int u: c) {
			if (u == c.back()) return u;
			if (u <= t and t <= s) return u;
		}
	}
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:52:1: warning: control reaches end of non-void function [-Wreturn-type]
   52 | }
      | ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 369 ms 896 KB Output is correct
2 Correct 300 ms 892 KB Output is correct
3 Correct 600 ms 684 KB Output is correct
4 Correct 413 ms 940 KB Output is correct
5 Correct 402 ms 688 KB Output is correct
6 Correct 299 ms 944 KB Output is correct
7 Correct 289 ms 684 KB Output is correct
8 Correct 2 ms 772 KB Output is correct
9 Correct 3 ms 760 KB Output is correct
10 Correct 0 ms 764 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 282 ms 1112 KB Output is correct
2 Correct 355 ms 792 KB Output is correct
3 Correct 540 ms 684 KB Output is correct
4 Correct 504 ms 684 KB Output is correct
5 Correct 354 ms 684 KB Output is correct
6 Correct 295 ms 684 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 348 ms 896 KB Output is correct
2 Correct 308 ms 900 KB Output is correct
3 Correct 588 ms 684 KB Output is correct
4 Correct 421 ms 684 KB Output is correct
5 Correct 374 ms 684 KB Output is correct
6 Correct 294 ms 884 KB Output is correct
7 Correct 282 ms 684 KB Output is correct
8 Correct 2 ms 764 KB Output is correct
9 Correct 2 ms 760 KB Output is correct
10 Correct 1 ms 764 KB Output is correct
11 Correct 371 ms 684 KB Output is correct
12 Correct 314 ms 948 KB Output is correct
13 Correct 304 ms 1408 KB Output is correct
14 Correct 269 ms 684 KB Output is correct
15 Correct 37 ms 764 KB Output is correct
16 Correct 39 ms 892 KB Output is correct
17 Correct 63 ms 900 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 556 ms 688 KB Output is correct
2 Correct 431 ms 696 KB Output is correct
3 Correct 374 ms 684 KB Output is correct
4 Correct 2 ms 764 KB Output is correct
5 Correct 2 ms 760 KB Output is correct
6 Correct 0 ms 768 KB Output is correct
7 Correct 383 ms 684 KB Output is correct
8 Correct 603 ms 684 KB Output is correct
9 Correct 396 ms 936 KB Output is correct
10 Correct 392 ms 684 KB Output is correct
11 Correct 3 ms 768 KB Output is correct
12 Correct 3 ms 768 KB Output is correct
13 Correct 2 ms 772 KB Output is correct
14 Correct 3 ms 768 KB Output is correct
15 Correct 2 ms 772 KB Output is correct
16 Correct 327 ms 684 KB Output is correct
17 Correct 350 ms 684 KB Output is correct
18 Correct 351 ms 684 KB Output is correct
19 Correct 359 ms 684 KB Output is correct
20 Correct 327 ms 684 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 349 ms 896 KB Output is correct
2 Correct 303 ms 1148 KB Output is correct
3 Correct 559 ms 684 KB Output is correct
4 Correct 422 ms 684 KB Output is correct
5 Correct 376 ms 684 KB Output is correct
6 Correct 280 ms 884 KB Output is correct
7 Correct 299 ms 684 KB Output is correct
8 Correct 1 ms 768 KB Output is correct
9 Correct 3 ms 768 KB Output is correct
10 Correct 0 ms 768 KB Output is correct
11 Correct 281 ms 868 KB Output is correct
12 Correct 354 ms 1080 KB Output is correct
13 Correct 590 ms 940 KB Output is correct
14 Correct 438 ms 684 KB Output is correct
15 Correct 397 ms 684 KB Output is correct
16 Correct 292 ms 684 KB Output is correct
17 Correct 394 ms 684 KB Output is correct
18 Correct 297 ms 1300 KB Output is correct
19 Correct 320 ms 1228 KB Output is correct
20 Correct 273 ms 684 KB Output is correct
21 Correct 37 ms 868 KB Output is correct
22 Correct 42 ms 884 KB Output is correct
23 Correct 66 ms 860 KB Output is correct
24 Correct 4 ms 768 KB Output is correct
25 Correct 4 ms 768 KB Output is correct
26 Correct 2 ms 764 KB Output is correct
27 Correct 3 ms 772 KB Output is correct
28 Correct 1 ms 768 KB Output is correct
29 Correct 293 ms 684 KB Output is correct
30 Correct 311 ms 684 KB Output is correct
31 Correct 378 ms 688 KB Output is correct
32 Correct 337 ms 684 KB Output is correct
33 Correct 316 ms 684 KB Output is correct
34 Correct 186 ms 892 KB Output is correct
35 Correct 260 ms 960 KB Output is correct
36 Correct 284 ms 1148 KB Output is correct
37 Correct 282 ms 964 KB Output is correct
38 Correct 286 ms 1124 KB Output is correct
39 Correct 288 ms 1240 KB Output is correct
40 Correct 319 ms 960 KB Output is correct
41 Correct 286 ms 960 KB Output is correct
42 Correct 42 ms 844 KB Output is correct
43 Correct 70 ms 872 KB Output is correct
44 Correct 97 ms 1116 KB Output is correct
45 Correct 116 ms 872 KB Output is correct
46 Correct 197 ms 852 KB Output is correct
47 Correct 186 ms 1056 KB Output is correct
48 Correct 39 ms 1380 KB Output is correct
49 Correct 40 ms 1168 KB Output is correct