제출 #767188

#제출 시각아이디문제언어결과실행 시간메모리
767188t6twotwo수천개의 섬 (IOI22_islands)C++17
10 / 100
40 ms4432 KiB
#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<int> a, b;
        for (int i = 0; i < M; i++) {
            if (U[i] == 0) {
                a.push_back(i);
            } else {
                b.push_back(i);
            }
        }
        if (a.size() >= 2 && b.size() >= 1) {
            return vector{a[0], b[0], a[1], a[0], b[0], a[1]};
        } else {
            return false;
        }
    }
    int s[3][3];
    for (int i = 0; i < M; i++) {
        if (U[i] < 3 && V[i] < 3) {
            s[U[i]][V[i]] = i;
        }
    }
    return vector{s[0][1], s[1][2], s[2][0], s[0][2], s[2][1], s[1][0], s[2][0], s[1][2], s[0][1], s[1][0], s[2][1], s[0][2]};
}
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