Submission #1222020

#	Time	Username	Problem	Language	Result	Execution time	Memory
1222020		totoro	Thousands Islands (IOI22_islands)	C++20	6.75 / 100	18 ms	4456 KiB

islands

#include "islands.h"

#include <variant>
#include <vector>

std::variant<bool, std::vector<int>> find_journey(int N, int M, std::vector<int> U, std::vector<int> V) {
    std::vector<std::vector<int>> canoesfor(N);
    for (int i = 0; i < M; ++i) {
        canoesfor[U[i]].push_back(i);
    }

    if (canoesfor[0].size() < 2 || canoesfor[1].size() < 1) {
        return false;
    }

    int a, b, x;
    a = canoesfor[0][0];
    b = canoesfor[0][1];
    x = canoesfor[1][0];
    return std::vector<int>{a, x, b, a, x, b};
}

• Subtask 1: 5 / 5
• Subtask 2: 1.75 / 5
• Subtask 3: 0 / 21
• Subtask 4: 0 / 24
• Subtask 5: 0 / 45