Submission #1204523

#	Time	Username	Problem	Language	Result	Execution time	Memory
1204523		HappyCapybara	Thousands Islands (IOI22_islands)	C++20	10 / 100	19 ms	6984 KiB

islands

#include "islands.h"
#include<bits/stdc++.h>
using namespace std;

variant<bool, vector<int>> find_journey(int N, int M, vector<int> U, vector<int> V){
  if (N == 2){
    vector<vector<int>> g(N);
    for (int i=0; i<M; i++) g[U[i]].push_back(i);
    if (g[0].size() >= 2 && g[1].size() >= 1) return vector<int>({g[0][0], g[1][0], g[0][1], g[0][0], g[1][0], g[0][1]});
    return false;
  }
  vector<vector<int>> g(N, vector<int>(N));
  for (int i=0; i<M; i++) g[U[i]][V[i]] = i;
  if (N == 2) return false;
  return vector<int>({g[0][1], g[1][2], g[2][0], g[0][2], g[2][1], g[1][0], g[2][0], g[1][2], g[0][1], g[1][0], g[2][1], g[0][2]});
}

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