Submission #1034565

#	Time	Username	Problem	Language	Result	Execution time	Memory
1034565		Mr_Husanboy	Thousands Islands (IOI22_islands)	C++17	10 / 100	22 ms	9548 KiB

islands

#include "islands.h"

#include <variant>
#include <bits/stdc++.h>

using namespace std;

#define ff first
#define ss second
#define all(a) (a).begin(), (a).end()
#define ll long long
const int mod = 1000002022;

vector<int> state, p;
int n, m; 
vector<vector<int>> g;
template<typename T>
int len(T &a){return a.size();}

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());


variant<bool, vector<int>> find_journey(
    int n, int m, std::vector<int> u, std::vector<int> v) {
  vector<vector<int>> g(n);
  for(int i = 0; i < m; i ++) g[u[i]].push_back(i);
  if(len(g[0]) <= 1) return false;
  
    
  if(n == 2){
    if(len(g[1]) == 0) return false;
    return vector {g[0][0], g[1][0], g[0][1], g[0][0], g[1][0], g[0][1]};
  }

  vector can(n, vector(n, 0));
  for(int i = 0; i < m; i++) can[u[i]][v[i]] = i;
  return vector{can[0][1], can[1][0], can[0][2], can[2][0], can[1][0], can[0][1], can[2][0], can[0][2]};

}

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