Submission #443410

#	Time	Username	Problem	Language	Result	Execution time	Memory
443410		mjhmjh1104	Fountain Parks (IOI21_parks)	C++17	5 / 100	74 ms	8956 KiB

parks

#include "parks.h"
#include <vector>
#include <utility>
#include <algorithm>
using namespace std;

int construct_roads(vector<int> x, vector<int> y) {
    if ((int)x.size() == 1) return build({}, {}, {}, {}), 1;
    int n = (int)x.size();
    vector<int> u, v, a, b;
    vector<pair<int, int>> p;
    for (int i = 0; i < n; i++) p.push_back({ y[i], i });
    sort(p.begin(), p.end());
    if (p.back().first - p.front().first == 2 * n - 2) {
        for (int i = 1; i < n; i++) {
            u.push_back(p[i - 1].second);
            v.push_back(p[i].second);
            a.push_back(1);
            b.push_back(p[i - 1].first + 1);
        }
        build(u, v, a, b);
        return 1;
    }
    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30