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Submission #986615

# Submission time Handle Problem Language Result Execution time Memory
986615 2024-05-20T21:29:29 Z CSQ31 Stations (IOI20_stations) C++17
100 / 100
 609 ms 1656 KB 
#include "stations.h"
#include<bits/stdc++.h>
using namespace std;
vector<int>adj[1000];
int tin[1000],tout[1000],color[1000];
int timer = -1;
void dfs(int v,int u){
	tin[v] = ++timer;
	for(int x:adj[v]){
		if(x==u)continue;
		color[x] = color[v]^1;
		dfs(x,v);
	}
	tout[v] = ++timer;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	for(int i=0;i<n;i++)adj[i].clear();
	vector<int>lab(n);
	for(int i=0;i+1<n;i++){
		adj[v[i]].push_back(u[i]);
		adj[u[i]].push_back(v[i]);
	}

	timer = -1;
	dfs(0,-1);
	for(int i=0;i<n;i++){
		if(color[i])lab[i] = tin[i];
		else lab[i] = tout[i];
	} 
	vector<int>crd;
	for(int x:lab)crd.push_back(x);
	sort(crd.begin(),crd.end());
	crd.resize(unique(crd.begin(),crd.end()) - crd.begin());
	for(int &x:lab)x = lower_bound(crd.begin(),crd.end(),x) - crd.begin();
	return lab;
}

int find_next_station(int s, int t, vector<int> c) {
	int n = c.size();
	if(c.back() > s){ 
		//s label is tin
		int last = s;
		for(int i=0;i+1<n;i++){
			int l = last+1;
			int r = c[i];
			if(l <= t && t <= r)return c[i];
			last = c[i];
		} 
		return c.back();
	}else{
		//s label is tout
		int last = s;
		for(int i=n-1;i>0;i--){
			int l = c[i];
			int r = last-1;
			if(l <= t && t <= r)return c[i];
			last = c[i];
		}
		return c[0];
	}
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 368 ms 928 KB Output is correct
2 Correct 273 ms 928 KB Output is correct
3 Correct 609 ms 940 KB Output is correct
4 Correct 411 ms 684 KB Output is correct
5 Correct 361 ms 684 KB Output is correct
6 Correct 294 ms 916 KB Output is correct
7 Correct 274 ms 684 KB Output is correct
8 Correct 1 ms 764 KB Output is correct
9 Correct 2 ms 768 KB Output is correct
10 Correct 1 ms 768 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 274 ms 880 KB Output is correct
2 Correct 328 ms 820 KB Output is correct
3 Correct 557 ms 684 KB Output is correct
4 Correct 476 ms 684 KB Output is correct
5 Correct 407 ms 684 KB Output is correct
6 Correct 279 ms 684 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 340 ms 940 KB Output is correct
2 Correct 297 ms 1184 KB Output is correct
3 Correct 569 ms 856 KB Output is correct
4 Correct 420 ms 684 KB Output is correct
5 Correct 395 ms 684 KB Output is correct
6 Correct 283 ms 916 KB Output is correct
7 Correct 304 ms 684 KB Output is correct
8 Correct 1 ms 764 KB Output is correct
9 Correct 2 ms 760 KB Output is correct
10 Correct 0 ms 780 KB Output is correct
11 Correct 399 ms 684 KB Output is correct
12 Correct 280 ms 1236 KB Output is correct
13 Correct 274 ms 1548 KB Output is correct
14 Correct 282 ms 684 KB Output is correct
15 Correct 31 ms 764 KB Output is correct
16 Correct 38 ms 944 KB Output is correct
17 Correct 71 ms 884 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 573 ms 684 KB Output is correct
2 Correct 459 ms 940 KB Output is correct
3 Correct 382 ms 684 KB Output is correct
4 Correct 1 ms 764 KB Output is correct
5 Correct 3 ms 768 KB Output is correct
6 Correct 1 ms 768 KB Output is correct
7 Correct 395 ms 684 KB Output is correct
8 Correct 566 ms 684 KB Output is correct
9 Correct 457 ms 680 KB Output is correct
10 Correct 391 ms 684 KB Output is correct
11 Correct 3 ms 768 KB Output is correct
12 Correct 3 ms 764 KB Output is correct
13 Correct 3 ms 772 KB Output is correct
14 Correct 3 ms 772 KB Output is correct
15 Correct 1 ms 768 KB Output is correct
16 Correct 343 ms 940 KB Output is correct
17 Correct 319 ms 940 KB Output is correct
18 Correct 365 ms 684 KB Output is correct
19 Correct 331 ms 684 KB Output is correct
20 Correct 316 ms 684 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 353 ms 920 KB Output is correct
2 Correct 263 ms 928 KB Output is correct
3 Correct 559 ms 684 KB Output is correct
4 Correct 415 ms 684 KB Output is correct
5 Correct 376 ms 684 KB Output is correct
6 Correct 270 ms 932 KB Output is correct
7 Correct 311 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 764 KB Output is correct
11 Correct 253 ms 872 KB Output is correct
12 Correct 343 ms 844 KB Output is correct
13 Correct 551 ms 684 KB Output is correct
14 Correct 466 ms 688 KB Output is correct
15 Correct 421 ms 684 KB Output is correct
16 Correct 287 ms 684 KB Output is correct
17 Correct 355 ms 684 KB Output is correct
18 Correct 252 ms 1164 KB Output is correct
19 Correct 327 ms 1028 KB Output is correct
20 Correct 280 ms 684 KB Output is correct
21 Correct 36 ms 768 KB Output is correct
22 Correct 46 ms 1184 KB Output is correct
23 Correct 56 ms 876 KB Output is correct
24 Correct 3 ms 768 KB Output is correct
25 Correct 2 ms 768 KB Output is correct
26 Correct 2 ms 768 KB Output is correct
27 Correct 2 ms 768 KB Output is correct
28 Correct 1 ms 768 KB Output is correct
29 Correct 347 ms 684 KB Output is correct
30 Correct 332 ms 688 KB Output is correct
31 Correct 365 ms 684 KB Output is correct
32 Correct 307 ms 684 KB Output is correct
33 Correct 302 ms 684 KB Output is correct
34 Correct 217 ms 904 KB Output is correct
35 Correct 300 ms 1452 KB Output is correct
36 Correct 293 ms 1180 KB Output is correct
37 Correct 302 ms 1168 KB Output is correct
38 Correct 307 ms 1168 KB Output is correct
39 Correct 302 ms 1268 KB Output is correct
40 Correct 293 ms 1016 KB Output is correct
41 Correct 298 ms 1024 KB Output is correct
42 Correct 39 ms 936 KB Output is correct
43 Correct 60 ms 876 KB Output is correct
44 Correct 82 ms 932 KB Output is correct
45 Correct 107 ms 904 KB Output is correct
46 Correct 194 ms 868 KB Output is correct
47 Correct 189 ms 896 KB Output is correct
48 Correct 35 ms 1236 KB Output is correct
49 Correct 33 ms 1656 KB Output is correct