Submission #392138

#	Time	Username	Problem	Language	Result	Execution time	Memory
392138		phathnv	Konstrukcija (COCI20_konstrukcija)	C++11	110 / 110	1 ms	332 KiB

Main

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

typedef long long ll;

int n, neg;
ll k;
vector<int> lastLayer;
vector<pair<int, int>> edges;

void AddLayer(int sz){
    vector<int> nxtLayer;
    for(int i = 1; i <= sz; i++)
        nxtLayer.push_back(++n);
    for(int u : lastLayer)
        for(int v : nxtLayer)
            edges.push_back({u, v});
    lastLayer = nxtLayer;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    cin >> k;
    if (k == 0){
        cout << "3 2\n";
        cout << "1 2\n";
        cout << "2 3\n";
        return 0;
    }
    if (k < 0){
        neg = 1;
        k *= -1;
    }

    n = 1;
    lastLayer = {1};
    int p = 0;
    for(int i = 0; i < 60; i++)
        if ((k >> i) & 1)
            p = i;
    for(int i = p - 1; i >= 0; i--){
        AddLayer(3);
        if ((k >> i) & 1){
            lastLayer.push_back(++n);
            edges.push_back({1, n});
        }
        AddLayer(2);
    }
    if (!neg)
        AddLayer(2);
    AddLayer(1);

    cout << n << ' ' << edges.size() << '\n';
    for(auto p : edges)
        cout << p.first << ' ' << p.second << '\n';

    return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 15 / 15
• Subtask 3: 20 / 20
• Subtask 4: 60 / 60