제출 #1058394

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1058394		tolbi	수천개의 섬 (IOI22_islands)	C++17	0 / 100	1 ms	604 KiB

islands

#include "islands.h"
#include <bits/stdc++.h>
using namespace std;
std::variant<bool, std::vector<int>> find_journey(
	int N, int M, std::vector<int> U, std::vector<int> V) {
	vector<vector<pair<int,int>>> arr(N);
	for (int i = 0; i < M; i++){
		arr[U[i]].push_back({V[i],i});
	}
	for (int i = 0; i < N; ++i)
	{
		sort(arr[i].begin(), arr[i].end());
	}
	if (arr[0].size()<=1) {
		assert(false);
		return false;
	}
	int a = arr[0][0].first;
	int b = arr[0][1].first;
	if (a==b){
		return vector<int>{arr[0][0].second,arr[a][0].second,arr[0][1].second,arr[0][0].second,arr[a][0].second,arr[0][1].second};
	}
	else {
		return vector<int>{arr[0][0].second,arr[a][0].second,arr[0][1].second,arr[b][0].second,arr[a][0].second,arr[0][0].second,arr[b][0].second,arr[0][1].second};
	}
}

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