제출 #797672

#제출 시각아이디문제언어결과실행 시간메모리
797672Joshi503수천개의 섬 (IOI22_islands)C++17
5 / 100
26 ms5132 KiB
// Source: https://usaco.guide/general/io

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

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