Submission #1001346

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1001346	2024-06-18 22:24:37	spacewalker	Longest Trip (IOI23_longesttrip)	C++17	100 / 100	12 ms	612 KiB

longesttrip

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#include <bits/stdc++.h>
#include "longesttrip.h"
 
using namespace std;
 
optional<int> find_edge_between(vector<int> s, int v) {
  if (!are_connected(s, {v})) return nullopt;
  vector<int> current = s;
  while (current.size() > 1) {
    int hs = current.size() / 2;
    vector<int> h1(begin(current), begin(current) + hs), h2(begin(current) + hs, end(current));
    if (are_connected(h1, {v})) current = h1;
    else current = h2;
  }
  return current[0];
}
 
optional<pair<int, int>> find_edge_between(vector<int> s1, vector<int> s2) {
  if (!are_connected(s1, s2)) return nullopt;
  vector<int> current = s1;
  while (current.size() > 1) {
    int hs = current.size() / 2;
    vector<int> h1(begin(current), begin(current) + hs), h2(begin(current) + hs, end(current));
    if (are_connected(h1, s2)) current = h1;
    else current = h2;
  }
  return make_pair(current[0], find_edge_between(s2, current[0]).value());
}
 
std::vector<int> longest_trip(int N, int D) {
 
 
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Compilation message (stderr)

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:64:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   64 |   if (fp1.size() == N) return fp1;
      |       ~~~~~~~~~~~^~~~

• Subtask 0: 0 / 0
• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 25 / 25
• Subtask 4: 60 / 60