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Submission #1051487

# Submission time Handle Problem Language Result Execution time Memory
1051487 2024-08-10T07:25:29 Z TahirAliyev Stations (IOI20_stations) C++17
100 / 100
 517 ms 1304 KB 
#include "stations.h"
#include <bits/stdc++.h>
using namespace std;

const int MAX = 1005;
vector<int> g[MAX];	
int in[MAX], out[MAX];
int col[MAX];
int t = 0;
void dfs(int node, int p){
	col[node] = col[p] ^ 1;
	in[node] = ++t;
	for(int to : g[node]){
		if(to == p) continue;
		dfs(to, node);
	}
	out[node] = t++;
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	for(int i = 0; i < n; i++) g[i].clear();
	for(int i = 0; i < n - 1; i++){
		g[u[i]].push_back(v[i]);
		g[v[i]].push_back(u[i]);
	}
	dfs(1, 1);
	vector<int> L;
	map<int, int> mp;
	for(int i = 0; i < n; i++){
		if(col[i]){
			L.push_back(in[i]);
			mp[in[i]];
		} 
		else{
			L.push_back(out[i]); 
			mp[out[i]];
		}
	}
	int t = 0;
	for(auto a : mp) mp[a.first] = t++;
	for(int i = 0; i < n; i++){
		L[i] = mp[L[i]];
	}
	return L;
}

int find_next_station(int s, int t, vector<int> c) {
	sort(c.begin(), c.end());
	if(s < c[0]){
		int in = s + 1;
		for(int i = 0; i < c.size() - 1; i++){
			if(in <= t && t <= c[i]){
				return c[i];
			}
			in = c[i] + 1;
		}
		return c.back();
	}
	else{
		sort(c.rbegin(), c.rend());
		int out = s - 1;
		for(int i = 0; i < c.size() - 1; i++){
			if(c[i] <= t && t <= out) return c[i];
			out = c[i] - 1;
		}
		return c.back();
	}
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:51:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |   for(int i = 0; i < c.size() - 1; i++){
      |                  ~~^~~~~~~~~~~~~~
stations.cpp:62:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |   for(int i = 0; i < c.size() - 1; i++){
      |                  ~~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 361 ms 940 KB Output is correct
2 Correct 235 ms 940 KB Output is correct
3 Correct 495 ms 684 KB Output is correct
4 Correct 391 ms 684 KB Output is correct
5 Correct 361 ms 684 KB Output is correct
6 Correct 255 ms 940 KB Output is correct
7 Correct 247 ms 684 KB Output is correct
8 Correct 0 ms 776 KB Output is correct
9 Correct 2 ms 768 KB Output is correct
10 Correct 0 ms 768 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 237 ms 688 KB Output is correct
2 Correct 326 ms 684 KB Output is correct
3 Correct 513 ms 684 KB Output is correct
4 Correct 393 ms 684 KB Output is correct
5 Correct 330 ms 684 KB Output is correct
6 Correct 256 ms 944 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 297 ms 940 KB Output is correct
2 Correct 274 ms 940 KB Output is correct
3 Correct 517 ms 684 KB Output is correct
4 Correct 394 ms 684 KB Output is correct
5 Correct 337 ms 684 KB Output is correct
6 Correct 232 ms 940 KB Output is correct
7 Correct 246 ms 952 KB Output is correct
8 Correct 2 ms 768 KB Output is correct
9 Correct 1 ms 776 KB Output is correct
10 Correct 0 ms 776 KB Output is correct
11 Correct 340 ms 684 KB Output is correct
12 Correct 223 ms 1048 KB Output is correct
13 Correct 244 ms 1188 KB Output is correct
14 Correct 264 ms 684 KB Output is correct
15 Correct 31 ms 764 KB Output is correct
16 Correct 27 ms 772 KB Output is correct
17 Correct 71 ms 764 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 498 ms 688 KB Output is correct
2 Correct 372 ms 684 KB Output is correct
3 Correct 329 ms 684 KB Output is correct
4 Correct 2 ms 1028 KB Output is correct
5 Correct 1 ms 768 KB Output is correct
6 Correct 0 ms 768 KB Output is correct
7 Correct 314 ms 684 KB Output is correct
8 Correct 460 ms 684 KB Output is correct
9 Correct 355 ms 684 KB Output is correct
10 Correct 307 ms 684 KB Output is correct
11 Correct 2 ms 768 KB Output is correct
12 Correct 3 ms 768 KB Output is correct
13 Correct 2 ms 764 KB Output is correct
14 Correct 2 ms 764 KB Output is correct
15 Correct 0 ms 776 KB Output is correct
16 Correct 287 ms 688 KB Output is correct
17 Correct 275 ms 684 KB Output is correct
18 Correct 277 ms 684 KB Output is correct
19 Correct 314 ms 684 KB Output is correct
20 Correct 302 ms 684 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 291 ms 940 KB Output is correct
2 Correct 244 ms 940 KB Output is correct
3 Correct 465 ms 684 KB Output is correct
4 Correct 354 ms 684 KB Output is correct
5 Correct 335 ms 684 KB Output is correct
6 Correct 234 ms 940 KB Output is correct
7 Correct 258 ms 684 KB Output is correct
8 Correct 2 ms 776 KB Output is correct
9 Correct 2 ms 1016 KB Output is correct
10 Correct 0 ms 776 KB Output is correct
11 Correct 254 ms 684 KB Output is correct
12 Correct 345 ms 688 KB Output is correct
13 Correct 460 ms 684 KB Output is correct
14 Correct 384 ms 688 KB Output is correct
15 Correct 309 ms 684 KB Output is correct
16 Correct 254 ms 684 KB Output is correct
17 Correct 348 ms 684 KB Output is correct
18 Correct 254 ms 1044 KB Output is correct
19 Correct 255 ms 1052 KB Output is correct
20 Correct 239 ms 684 KB Output is correct
21 Correct 30 ms 768 KB Output is correct
22 Correct 28 ms 764 KB Output is correct
23 Correct 47 ms 768 KB Output is correct
24 Correct 3 ms 768 KB Output is correct
25 Correct 2 ms 776 KB Output is correct
26 Correct 1 ms 768 KB Output is correct
27 Correct 2 ms 776 KB Output is correct
28 Correct 0 ms 776 KB Output is correct
29 Correct 278 ms 800 KB Output is correct
30 Correct 290 ms 684 KB Output is correct
31 Correct 321 ms 684 KB Output is correct
32 Correct 288 ms 684 KB Output is correct
33 Correct 282 ms 684 KB Output is correct
34 Correct 173 ms 972 KB Output is correct
35 Correct 263 ms 940 KB Output is correct
36 Correct 233 ms 944 KB Output is correct
37 Correct 240 ms 1064 KB Output is correct
38 Correct 245 ms 1072 KB Output is correct
39 Correct 267 ms 1056 KB Output is correct
40 Correct 257 ms 1044 KB Output is correct
41 Correct 276 ms 1304 KB Output is correct
42 Correct 27 ms 776 KB Output is correct
43 Correct 55 ms 768 KB Output is correct
44 Correct 69 ms 744 KB Output is correct
45 Correct 80 ms 1192 KB Output is correct
46 Correct 168 ms 684 KB Output is correct
47 Correct 183 ms 684 KB Output is correct
48 Correct 31 ms 956 KB Output is correct
49 Correct 26 ms 1024 KB Output is correct