Submission #1031216

#	Time	Username	Problem	Language	Result	Execution time	Memory
1031216		tincamatei	Portal (BOI24_portal)	C++14	11 / 100	2073 ms	3408 KiB

Main

#include <bits/stdc++.h>

long long det(std::pair<int, int> a, std::pair<int, int> b) {
    return (long long)a.first * b.second -
           (long long)a.second * b.first;
}

int main() {
    int N;

    std::cin >> N;

    std::vector<std::pair<int, int>> v(N);
    std::vector<std::pair<int, int>> d(N - 1);

    for (int i = 0; i < N; i++) {
        std::cin >> v[i].first >> v[i].second;
    }

    for (int i = 0; i < N - 1; i++) {
        d[i].first = v[i + 1].first - v[0].first;
        d[i].second = v[i + 1].second - v[0].second;
    }

    long long mindet = 1LL << 62;

    for (int i = 0; i < N - 1; i++)
        for (int j = i + 1; j < N - 1; j++) {
            long long dt = std::abs(det(d[i], d[j]));

            if (dt > 0)
                mindet = std::min(dt, mindet);
        }

    if (mindet == 1LL << 62)
        std::cout << "-1";
    else
        std::cout << mindet;

    return 0;
}

• Subtask 1: 1 / 1
• Subtask 2: 10 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 29
• Subtask 5: 0 / 15
• Subtask 6: 0 / 35