oj.uz

Submission #321713

# Submission time Handle Problem Language Result Execution time Memory
321713 2020-11-13T05:05:01 Z Gilgamesh Stations (IOI20_stations) C++17
100 / 100
 1160 ms 1348 KB 
#include "stations.h"
#include <bits/stdc++.h>
using namespace std;

const int mxN = 1'001;

vector<int> adj[mxN];
int timer;
int temp[mxN];
int depth[mxN];

void dfs(int v, int p){
	if(depth[v] % 2 == 0){
		temp[timer++] = v;
	}
	for(int i : adj[v]) {
		if(i == p) continue;
		depth[i] = depth[v] + 1;
		dfs(i, v);
	}
	if(depth[v] % 2 == 1){
		temp[timer++] = v;
	}
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	vector<int> labels(n);
	for(int i = 0; i < n; ++i){
		adj[i].clear();
	}
	for(int i = 0; i < n - 1; ++i){
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}
	timer = 0;
	dfs(0, -1);
	for(int i = 0; i < n; ++i){
		labels[temp[i]] = i;
	}
	return labels;
}

int find_next_station(int s, int t, vector<int> c) {
	sort(c.begin(), c.end());
	int sz = c.size();
	if(sz == 1) return c[0];
	if(s < c[0]) {
		//node is in, rest is out
		if(t < s || (t > c[sz - 2])) {
			return c[sz - 1];
		}
		for(int i : c){
			if(t <= i) {
				return i;
			}
		}
	} else{
		//node is out, rest is in
		if(t <= c[0] || t > s) {
			return c[0];
		}
		int ans = 0;
		for(int i : c){
			if(t < i) break;
			ans = i;
		}
		return ans;
	}
}
/*
int main(){
	int n; cin >> n;
	vector<int> a(n - 1), b(n - 1);
	for(int i = 0; i < n - 1; ++i){
		cin >> a[i] >> b[i];
	}
	vector<int> labels = label(n, 0, a, b);
	for(int i : labels){
		cout << i << " ";
	}
	cout << "\n";
	vector<int> nb;
	nb.emplace_back(labels[1]); nb.emplace_back(labels[2]);
	cout << find_next_station(labels[0], labels[4], nb);
}*/

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:69:1: warning: control reaches end of non-void function [-Wreturn-type]
   69 | }
      | ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 525 ms 1128 KB Output is correct
2 Correct 438 ms 1152 KB Output is correct
3 Correct 905 ms 928 KB Output is correct
4 Correct 695 ms 944 KB Output is correct
5 Correct 651 ms 984 KB Output is correct
6 Correct 472 ms 864 KB Output is correct
7 Correct 421 ms 1240 KB Output is correct
8 Correct 3 ms 864 KB Output is correct
9 Correct 6 ms 864 KB Output is correct
10 Correct 2 ms 864 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 438 ms 888 KB Output is correct
2 Correct 668 ms 1012 KB Output is correct
3 Correct 921 ms 944 KB Output is correct
4 Correct 637 ms 944 KB Output is correct
5 Correct 632 ms 944 KB Output is correct
6 Correct 574 ms 896 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 667 ms 968 KB Output is correct
2 Correct 584 ms 1084 KB Output is correct
3 Correct 958 ms 944 KB Output is correct
4 Correct 885 ms 1108 KB Output is correct
5 Correct 720 ms 1072 KB Output is correct
6 Correct 442 ms 992 KB Output is correct
7 Correct 644 ms 1108 KB Output is correct
8 Correct 3 ms 864 KB Output is correct
9 Correct 5 ms 864 KB Output is correct
10 Correct 2 ms 736 KB Output is correct
11 Correct 659 ms 864 KB Output is correct
12 Correct 490 ms 864 KB Output is correct
13 Correct 433 ms 1292 KB Output is correct
14 Correct 435 ms 736 KB Output is correct
15 Correct 60 ms 944 KB Output is correct
16 Correct 67 ms 736 KB Output is correct
17 Correct 138 ms 736 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1160 ms 864 KB Output is correct
2 Correct 691 ms 1120 KB Output is correct
3 Correct 647 ms 952 KB Output is correct
4 Correct 3 ms 736 KB Output is correct
5 Correct 5 ms 904 KB Output is correct
6 Correct 1 ms 776 KB Output is correct
7 Correct 567 ms 1080 KB Output is correct
8 Correct 893 ms 736 KB Output is correct
9 Correct 737 ms 1116 KB Output is correct
10 Correct 610 ms 864 KB Output is correct
11 Correct 7 ms 944 KB Output is correct
12 Correct 5 ms 864 KB Output is correct
13 Correct 5 ms 864 KB Output is correct
14 Correct 5 ms 992 KB Output is correct
15 Correct 2 ms 992 KB Output is correct
16 Correct 708 ms 1072 KB Output is correct
17 Correct 698 ms 1108 KB Output is correct
18 Correct 641 ms 864 KB Output is correct
19 Correct 594 ms 944 KB Output is correct
20 Correct 555 ms 864 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 577 ms 1088 KB Output is correct
2 Correct 491 ms 1096 KB Output is correct
3 Correct 1071 ms 884 KB Output is correct
4 Correct 650 ms 1072 KB Output is correct
5 Correct 714 ms 944 KB Output is correct
6 Correct 443 ms 1204 KB Output is correct
7 Correct 502 ms 948 KB Output is correct
8 Correct 3 ms 952 KB Output is correct
9 Correct 5 ms 736 KB Output is correct
10 Correct 2 ms 736 KB Output is correct
11 Correct 575 ms 880 KB Output is correct
12 Correct 696 ms 736 KB Output is correct
13 Correct 944 ms 864 KB Output is correct
14 Correct 677 ms 944 KB Output is correct
15 Correct 722 ms 1120 KB Output is correct
16 Correct 522 ms 896 KB Output is correct
17 Correct 631 ms 736 KB Output is correct
18 Correct 539 ms 992 KB Output is correct
19 Correct 529 ms 1216 KB Output is correct
20 Correct 491 ms 736 KB Output is correct
21 Correct 69 ms 864 KB Output is correct
22 Correct 87 ms 912 KB Output is correct
23 Correct 134 ms 736 KB Output is correct
24 Correct 6 ms 944 KB Output is correct
25 Correct 8 ms 952 KB Output is correct
26 Correct 6 ms 736 KB Output is correct
27 Correct 4 ms 736 KB Output is correct
28 Correct 2 ms 864 KB Output is correct
29 Correct 564 ms 736 KB Output is correct
30 Correct 468 ms 944 KB Output is correct
31 Correct 548 ms 952 KB Output is correct
32 Correct 634 ms 952 KB Output is correct
33 Correct 494 ms 864 KB Output is correct
34 Correct 362 ms 1240 KB Output is correct
35 Correct 408 ms 1076 KB Output is correct
36 Correct 466 ms 992 KB Output is correct
37 Correct 463 ms 1116 KB Output is correct
38 Correct 568 ms 992 KB Output is correct
39 Correct 416 ms 1248 KB Output is correct
40 Correct 521 ms 1348 KB Output is correct
41 Correct 460 ms 1240 KB Output is correct
42 Correct 59 ms 900 KB Output is correct
43 Correct 132 ms 880 KB Output is correct
44 Correct 157 ms 872 KB Output is correct
45 Correct 149 ms 964 KB Output is correct
46 Correct 376 ms 1028 KB Output is correct
47 Correct 336 ms 984 KB Output is correct
48 Correct 65 ms 1224 KB Output is correct
49 Correct 62 ms 1212 KB Output is correct