Submission #786269

#	Time	Username	Problem	Language	Result	Execution time	Memory
786269		khshg	Thousands Islands (IOI22_islands)	C++17	5 / 100	26 ms	4312 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) {
	vector<map<int, vector<int>>> adj(N);
	for(int i = 0; i < M; ++i) {
		adj[U[i]][V[i]].push_back(i);
	}
	if((int)adj[0][1].size() >= 2 && (int)adj[1][0].size() >= 1) {
		vector<int> ans = {adj[0][1][0], adj[1][0][0], adj[0][1][1], adj[0][1][0], adj[1][0][0], adj[0][1][1]};
		return ans;
	}
	return false;
}

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