oj.uz

Submission #978924

# Submission time Handle Problem Language Result Execution time Memory
978924 2024-05-10T03:34:27 Z happypotato Stations (IOI20_stations) C++17
0 / 100
 570 ms 884 KB 
#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back

vector<int> label(int n, int k, vector<int> U, vector<int> V) {
	vector<vector<int>> adj(n);
	for (int i = 0; i < n - 1; i++) {
		adj[U[i]].pb(V[i]);
		adj[V[i]].pb(U[i]);
	}
	vector<int> res(n);
	int tt = 0;

	auto dfs = [&](auto&& self, int u = 0, int par = -1, bool flag = false) -> void {
		if (!flag) res[u] = ++tt;
		for (int v : adj[u]) {
			if (v == par) continue;
			self(self, v, u, flag ^ 1);
		}
		if (flag) res[u] = ++tt;
	};

	dfs(dfs);
	return res;
}

int find_next_station(int s, int t, vector<int> c) {
	if (c.size() == 1) return c.front();
	c.pb(s);
	sort(c.begin(), c.end());
	if (c.back() == s) {
		for (int i = 1; i < (int)(c.size()); i++) {
			if (c[i] <= t && t < c[i + 1]) return c[i];
		}
		return c.front();
	} else if (c.front() == s) {
		for (int i = 0; i < (int)(c.size()) - 1; i++) {
			if (c[i] <= t && t < c[i + 1]) return c[i];
		}
		return c.back();
	} else throw runtime_error("wrong construction");
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 351 ms 876 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 302 ms 856 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 361 ms 880 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 570 ms 684 KB Output is correct
2 Correct 425 ms 684 KB Output is correct
3 Incorrect 403 ms 684 KB Wrong query response.
4 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Incorrect 334 ms 884 KB Wrong query response.
2 Halted 0 ms 0 KB -