Submission #487181

#	Time	Username	Problem	Language	Result	Execution time	Memory
487181		MilosMilutinovic	Fountain Parks (IOI21_parks)	C++17	5 / 100	59 ms	7892 KiB

parks

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

int construct_roads(std::vector<int> x, std::vector<int> y) {
    if (x.size() == 1) {
        build({}, {}, {}, {});
        return 1;
    }
    int n = x.size();
    int mn = *min_element(x.begin(), x.end());
    int mx = *min_element(x.begin(), x.end());
    if (mn == 2 && mx == 2) {
        int p[n];
        for (int i = 0; i < n; i++) p[i] = i;
        sort(p, p + n, [&](int i, int j) {
            return y[i] < y[j];
        });
        for (int i = 0; i + 1 < n; i++)
            if (y[p[i]] + 2 != y[p[i + 1]])
                return 0;
        vector<int> u, v, a, b;
        for (int i = 0; i + 1 < n; i++) {
            u.push_back(p[i]);
            v.push_back(p[i + 1]);
            a.push_back(x[i] - 1);
            b.push_back(y[p[i]] + 1);
        }
        build(u, v, a, b);
        return 1;
    }
}

Compilation message (stderr)

parks.cpp: In function 'int construct_roads(std::vector<int>, std::vector<int>)':
parks.cpp:32:1: warning: control reaches end of non-void function [-Wreturn-type]
   32 | }
      | ^

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