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Submission #314825

# Submission time Handle Problem Language Result Execution time Memory
314825 2020-10-21T11:36:33 Z kostia244 Stations (IOI20_stations) C++17
100 / 100
 1063 ms 1160 KB 
#include "stations.h"
#include <bits/stdc++.h>
#define all(x) begin(x), end(x)
using namespace std;
namespace lab {
vector<vector<int>> g;
vector<int> tin, tout, d;
int timer;
void dfs(int v, int p) {
	timer += d[v]%2 == 0;
	tin[v] = timer;
	for(auto &i : g[v]) if(i != p) {
		d[i] = d[v]+1;
		dfs(i, v);
	}
	timer += d[v]%2 == 1;
	tout[v] = timer;
}
};
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	using namespace lab;
	timer = -1;
	tin = tout = d = vector<int>(n);
	g.assign(n, vector<int>());
	for(int i = 0; i+1 < n; i++) {
		g[u[i]].push_back(v[i]);
		g[v[i]].push_back(u[i]);
	}
	dfs(0, 0);
	std::vector<int> labels(n);
	for (int i = 0; i < n; i++) {
		labels[i] = (d[i]&1) ? tout[i] : tin[i];
	}
	return labels;
}
int rv(int a) { return a; }
int find_next_station(int s, int t, std::vector<int> c) {
	int type, par;
	type = s > *max_element(all(c));//tout
	if(s) {
		if(type == 0) {//tin here, tout in neighbors
			par = *max_element(all(c));
			c.erase(max_element(all(c)));
		} else {//tout here
			par = *min_element(all(c));
			c.erase(min_element(all(c)));
		}
	} else par = -1;
	if(!type) {
		if(rv(t) < rv(s)) return par;
		int mn = 1<<30;
		for(auto &i : c) if(rv(t) <= rv(i)) mn = min(mn, i);
		if(mn == 1<<30) mn = par;
		return mn;
	}
	if(t > s) return par;
	int mx = -1;
	for(auto &i : c) if(rv(t) >= rv(i)) mx = max(mx, i);
	if(mx == -1) mx = par;
	return mx;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 549 ms 1024 KB Output is correct
2 Correct 464 ms 1024 KB Output is correct
3 Correct 879 ms 644 KB Output is correct
4 Correct 668 ms 644 KB Output is correct
5 Correct 600 ms 652 KB Output is correct
6 Correct 476 ms 1024 KB Output is correct
7 Correct 467 ms 784 KB Output is correct
8 Correct 2 ms 656 KB Output is correct
9 Correct 4 ms 656 KB Output is correct
10 Correct 1 ms 656 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 487 ms 1000 KB Output is correct
2 Correct 517 ms 812 KB Output is correct
3 Correct 1063 ms 640 KB Output is correct
4 Correct 722 ms 640 KB Output is correct
5 Correct 666 ms 772 KB Output is correct
6 Correct 473 ms 828 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 655 ms 1160 KB Output is correct
2 Correct 450 ms 1024 KB Output is correct
3 Correct 873 ms 640 KB Output is correct
4 Correct 642 ms 640 KB Output is correct
5 Correct 633 ms 784 KB Output is correct
6 Correct 526 ms 1024 KB Output is correct
7 Correct 479 ms 1024 KB Output is correct
8 Correct 3 ms 644 KB Output is correct
9 Correct 5 ms 640 KB Output is correct
10 Correct 1 ms 640 KB Output is correct
11 Correct 641 ms 640 KB Output is correct
12 Correct 552 ms 1136 KB Output is correct
13 Correct 488 ms 1128 KB Output is correct
14 Correct 443 ms 812 KB Output is correct
15 Correct 65 ms 896 KB Output is correct
16 Correct 74 ms 848 KB Output is correct
17 Correct 109 ms 800 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 880 ms 644 KB Output is correct
2 Correct 674 ms 644 KB Output is correct
3 Correct 563 ms 648 KB Output is correct
4 Correct 3 ms 640 KB Output is correct
5 Correct 5 ms 640 KB Output is correct
6 Correct 2 ms 640 KB Output is correct
7 Correct 777 ms 644 KB Output is correct
8 Correct 882 ms 652 KB Output is correct
9 Correct 662 ms 896 KB Output is correct
10 Correct 581 ms 644 KB Output is correct
11 Correct 7 ms 656 KB Output is correct
12 Correct 5 ms 640 KB Output is correct
13 Correct 5 ms 644 KB Output is correct
14 Correct 5 ms 644 KB Output is correct
15 Correct 2 ms 780 KB Output is correct
16 Correct 540 ms 896 KB Output is correct
17 Correct 525 ms 784 KB Output is correct
18 Correct 509 ms 640 KB Output is correct
19 Correct 497 ms 788 KB Output is correct
20 Correct 590 ms 640 KB Output is correct

Subtask #5
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 513 ms 1024 KB Output is correct
2 Correct 460 ms 1024 KB Output is correct
3 Correct 908 ms 648 KB Output is correct
4 Correct 714 ms 648 KB Output is correct
5 Correct 618 ms 640 KB Output is correct
6 Correct 517 ms 1024 KB Output is correct
7 Correct 521 ms 780 KB Output is correct
8 Correct 3 ms 652 KB Output is correct
9 Correct 4 ms 640 KB Output is correct
10 Correct 1 ms 640 KB Output is correct
11 Correct 618 ms 1032 KB Output is correct
12 Correct 592 ms 824 KB Output is correct
13 Correct 1049 ms 648 KB Output is correct
14 Correct 689 ms 644 KB Output is correct
15 Correct 618 ms 768 KB Output is correct
16 Correct 488 ms 816 KB Output is correct
17 Correct 588 ms 640 KB Output is correct
18 Correct 473 ms 768 KB Output is correct
19 Correct 476 ms 1024 KB Output is correct
20 Correct 453 ms 816 KB Output is correct
21 Correct 61 ms 768 KB Output is correct
22 Correct 74 ms 844 KB Output is correct
23 Correct 109 ms 808 KB Output is correct
24 Correct 6 ms 640 KB Output is correct
25 Correct 6 ms 640 KB Output is correct
26 Correct 5 ms 644 KB Output is correct
27 Correct 4 ms 644 KB Output is correct
28 Correct 2 ms 640 KB Output is correct
29 Correct 516 ms 640 KB Output is correct
30 Correct 581 ms 648 KB Output is correct
31 Correct 510 ms 640 KB Output is correct
32 Correct 492 ms 640 KB Output is correct
33 Correct 523 ms 648 KB Output is correct
34 Correct 318 ms 1112 KB Output is correct
35 Correct 442 ms 1024 KB Output is correct
36 Correct 460 ms 1092 KB Output is correct
37 Correct 519 ms 1008 KB Output is correct
38 Correct 481 ms 1024 KB Output is correct
39 Correct 534 ms 1008 KB Output is correct
40 Correct 429 ms 1024 KB Output is correct
41 Correct 479 ms 896 KB Output is correct
42 Correct 80 ms 820 KB Output is correct
43 Correct 129 ms 832 KB Output is correct
44 Correct 143 ms 768 KB Output is correct
45 Correct 164 ms 788 KB Output is correct
46 Correct 295 ms 820 KB Output is correct
47 Correct 313 ms 768 KB Output is correct
48 Correct 69 ms 1028 KB Output is correct
49 Correct 66 ms 1024 KB Output is correct