oj.uz

Submission #412510

# Submission time Handle Problem Language Result Execution time Memory
412510 2021-05-27T03:02:40 Z two_sides Stations (IOI20_stations) C++17
0 / 100
 956 ms 656 KB 
#include "stations.h"
#include <bits/stdc++.h>

using namespace std;

void dfs(int u, int p, bool d, const vector <vector <int>> &adj, vector <int> &label) {
    static int cnt = 0;
    if (!d) label[u] = cnt++;
    for (int v : adj[u])
        if (v != p) dfs(v, u, !d, adj, label);
    if (d) label[u] = cnt++; 
}

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

int find_next_station(int s, int t, vector <int> c) {
    if (s < c[0]) {
        int lo = s, hi = c.size() > 1 ? c[c.size() - 2] : s;
        if (lo <= t && t <= hi) {
            for (int u : c)
                if (u >= t) return u;
        }
        return c[c.size() - 1];
    } else {
        int hi = s, lo = c.size() > 1 ? c[1] : s;
        if (lo <= t && t <= hi) {
            for (int u : c)
                if (u <= t) return u;
        }
        return c[0];
    }
    return c[0];
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 480 KB Invalid labels (values out of range). scenario=2, k=1000, vertex=1, label=1008
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 292 KB Invalid labels (values out of range). scenario=1, k=1000, vertex=1, label=1507
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 647 ms 624 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 956 ms 480 KB Output is correct
2 Incorrect 913 ms 496 KB Wrong query response.
3 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Incorrect 650 ms 656 KB Wrong query response.
2 Halted 0 ms 0 KB -