oj.uz

Submission #432484

# Submission time Handle Problem Language Result Execution time Memory
432484 2021-06-18T10:37:00 Z milleniumEeee Stations (IOI20_stations) C++17
21 / 100
 942 ms 768 KB 
#ifndef EVAL
#include "stub.cpp"
#endif
#include "stations.h"
 
#include <bits/stdc++.h>
#define fr first
#define sc second
#define pii pair<int, int>
#define pb push_back
#define szof(s) (int)s.size()
#define all(s) s.begin(), s.end()
 
using namespace std;
 
const int MAXN = 1005;

vector <int> g[MAXN];
int cnt[MAXN];

void clean() {
	for (int i = 0; i < MAXN; i++) {
		cnt[i] = 0;
	}
	for (int i = 0; i < MAXN; i++) {
		g[i].clear();
	}
}

void dfs(int v, int par, vector <int> &order) {
	order.pb(v);
	for (int to : g[v]) {
		if (to != par) {
			dfs(to, v, order);
		}
	}
}

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	clean(); // на всякий случай
	for (int i = 0; i <= n - 2; i++) {
		int x = u[i];
		int y = v[i];
		g[x].pb(y);
		g[y].pb(x);
		cnt[x]++;
		cnt[y]++;
	}
	int root = 0;
	bool flag = 0;
	for (int i = 0; i < n; i++) {
		if (cnt[i] >= 3) {
			root = i;
			flag = 1;
		}
	}
	vector <int> labels(n);
	if (flag) {
		labels[root] = 1e6;
		int sub = 1;
		for (int son : g[root]) {
			vector <int> order;
			dfs(son, root, order);
			int id = sub * 1000;
			for (int el : order) {
				labels[el] = id++;
			}
			sub++;
		}
	}
	else { // просто бамбук
		int up = -1;
		for (int i = 0; i < n; i++) {
			if (cnt[i] == 1) {
				up = i;
				break;
			}
		}
		vector <int> order;
		dfs(up, -1, order);
		int id = 0;
		for (int el : order) {
			labels[el] = id++;
		}
	}
	return labels;
}
 
int find_next_station(int s, int t, vector<int> c) {
	if (s == 1e6) {
		return t / 1000 * 1000;
	}
	if (s / 1000 == t / 1000) {
		if (s < t) {
			return s + 1;
		} else {
			return s - 1;
		}
	} else {
		if (s % 1000 == 0) {
			return 1e6;
		} else {
			return s - 1;
		}
	}
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 579 ms 644 KB Output is correct
2 Correct 518 ms 504 KB Output is correct
3 Correct 926 ms 520 KB Output is correct
4 Correct 677 ms 508 KB Output is correct
5 Correct 634 ms 528 KB Output is correct
6 Correct 592 ms 764 KB Output is correct
7 Correct 461 ms 512 KB Output is correct
8 Correct 4 ms 468 KB Output is correct
9 Correct 5 ms 468 KB Output is correct
10 Correct 1 ms 464 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 316 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=0, label=1007
2 Halted 0 ms 0 KB -

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 526 ms 616 KB Output is correct
2 Correct 477 ms 528 KB Output is correct
3 Correct 874 ms 512 KB Output is correct
4 Correct 669 ms 600 KB Output is correct
5 Correct 625 ms 400 KB Output is correct
6 Correct 405 ms 528 KB Output is correct
7 Correct 463 ms 728 KB Output is correct
8 Correct 2 ms 468 KB Output is correct
9 Correct 5 ms 464 KB Output is correct
10 Correct 1 ms 476 KB Output is correct
11 Correct 598 ms 556 KB Output is correct
12 Correct 471 ms 656 KB Output is correct
13 Correct 483 ms 768 KB Output is correct
14 Correct 448 ms 656 KB Output is correct
15 Correct 62 ms 532 KB Output is correct
16 Correct 77 ms 548 KB Output is correct
17 Correct 102 ms 640 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 942 ms 400 KB Output is correct
2 Correct 626 ms 528 KB Output is correct
3 Correct 570 ms 528 KB Output is correct
4 Correct 4 ms 468 KB Output is correct
5 Correct 4 ms 468 KB Output is correct
6 Correct 2 ms 468 KB Output is correct
7 Correct 595 ms 400 KB Output is correct
8 Correct 900 ms 400 KB Output is correct
9 Correct 694 ms 400 KB Output is correct
10 Correct 643 ms 516 KB Output is correct
11 Incorrect 6 ms 476 KB Wrong query response.
12 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 585 ms 644 KB Output is correct
2 Correct 501 ms 504 KB Output is correct
3 Correct 873 ms 400 KB Output is correct
4 Correct 647 ms 508 KB Output is correct
5 Correct 619 ms 508 KB Output is correct
6 Correct 494 ms 528 KB Output is correct
7 Correct 430 ms 516 KB Output is correct
8 Correct 3 ms 468 KB Output is correct
9 Correct 5 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Incorrect 400 ms 516 KB Wrong query response.
12 Halted 0 ms 0 KB -