Submission #759467

#	Time	Username	Problem	Language	Result	Execution time	Memory
759467		drdilyor	Fountain Parks (IOI21_parks)	C++17	5 / 100	47 ms	7860 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();

    std::vector<int> u, v, a, b;
    vector<int> ix(n);
    iota(ix.begin(), ix.end(), 0);
    sort(ix.begin(), ix.end(), [&](int a, int b) {
            return y[a] < y[b];
            });

    for (int i = 1; i <n; i++) {
        u.push_back(ix[i-1]);
        v.push_back(ix[i]);
        a.push_back(1);
        b.push_back(y[ix[i]]-1);
        if (i && y[ix[i]] != y[ix[i-1]]+2)
            return 0;
    }

    build(u, v, a, b);

    return 1;
}

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