Submission #1182327

#	Time	Username	Problem	Language	Result	Execution time	Memory
1182327		PagodePaiva	Thousands Islands (IOI22_islands)	C++20	6.75 / 100	21 ms	7492 KiB

islands

#include "islands.h"
#include<bits/stdc++.h>
#include <variant>
#include <vector>

using namespace std;

const int N = 100010;
vector <pair <int, int>> g[N];

std::variant<bool, std::vector<int>> find_journey(
    int N, int M, std::vector<int> U, std::vector<int> V) {
  for(int i = 0;i < M;i++){
    g[U[i]].push_back({V[i], i});
  }
  if(g[0].size() < 2) return false;
  if(g[1].size() < 1) return false;
  int a = g[0][0].second, b = g[0][1].second, c = g[1][0].second;
  vector <int> ans = {a, c, b, a, c, b};
  return ans;
  /*
  if (N == 4) {
    return std::vector<int>({0, 1, 2, 4, 0, 3, 2, 1, 4, 3});
  }
  return false;
    */
}

• Subtask 1: 5 / 5
• Subtask 2: 1.75 / 5
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 45