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Submission #306048

# Submission time Handle Problem Language Result Execution time Memory
306048 2020-09-24T11:33:44 Z eriksuenderhauf Stations (IOI20_stations) C++17
0 / 100
 833 ms 908 KB 
#include "stations.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> label(int n, int k, vector<int> u, vector<int> v) {
  vector<int> deg(n);
  vector<vector<int>> adj(n);
  for (int i = 0; i < n - 1; i++)
    deg[u[i]]++, deg[v[i]]++, adj[u[i]].push_back(v[i]), adj[v[i]].push_back(u[i]);;
  vector<int> labels(n);
  if (*max_element(deg.begin(), deg.end()) <= 2) {
    int r = min_element(deg.begin(), deg.end()) - deg.begin(), p = -1;
    labels[r] = 0;
    for (int i = 1; i < n; i++) {
      if (~p) adj[r].erase(find(adj[r].begin(), adj[r].end(), p));
      tie(r, p) = make_pair(adj[r][0], r);
      labels[r] = i;
    }
  } else {
    iota(labels.begin(), labels.end(), 0);
  }
  return labels;
}

int find_next_station(int s, int t, vector<int> c) {
  set<int> tmp; for (int x: c) tmp.insert(x+1);
  int y = t+1;
  if (tmp.count(y)) return y-1;
  while (y > 0) {
    y /= 2;
    if (tmp.count(y))
      return y-1;
  }
  return *min_element(c.begin(), c.end());
  // return s < t ? *max_element(c.begin(), c.end()) : *min_element(c.begin(), c.end());
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 530 ms 768 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 481 ms 768 KB Output is correct
2 Incorrect 544 ms 816 KB Wrong query response.
3 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 536 ms 908 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 833 ms 648 KB Output is correct
2 Correct 654 ms 644 KB Output is correct
3 Incorrect 595 ms 776 KB Wrong query response.
4 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Incorrect 549 ms 780 KB Wrong query response.
2 Halted 0 ms 0 KB -