Submission #824217

#	Time	Username	Problem	Language	Result	Execution time	Memory
824217		rnl42	Game (IOI14_game)	C++14	15 / 100	1 ms	340 KiB

game

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

struct UF {
    vector<int> pere;
    void init(int n) {
        pere.resize(n);
        iota(pere.begin(), pere.end(), 0);
    }
    int root(int x) {
        return x == pere[x] ? x : pere[x] = root(pere[x]);
    }
    void merge(int x, int y) {
        pere[root(x)] = root(y); 
    }
};

UF uf;
vector<int> non_explore;
vector<vector<int>> graphe;

void initialize(int n) {
    uf.init(n);
    non_explore.assign(n, n-1);
    graphe.assign(n, vector<int>(n, -1));
    for (int i=0; i < n; i++) {
        graphe[i][i] = 2;
    }
}


void complete(int u) {
    if (non_explore[uf.root(u)] != 1) return;
    auto it = find(graphe[u].begin(), graphe[u].end(), -1);
    int v = it - graphe[u].begin();
    graphe[u][v] = 1;
    graphe[v][u] = 1;
    int total_non_explore = non_explore[uf.root(u)] + non_explore[uf.root(v)] - 2;
    uf.merge(u, v);
    non_explore[uf.root(u)] = total_non_explore;
    complete(v);
}


int hasEdge(int u, int v) {
    if (graphe[u][v] != -1) {
        return graphe[u][v];
    } else if (non_explore[uf.root(u)] > 1 && non_explore[uf.root(v)] > 1) {
        graphe[u][v] = 0;
        graphe[v][u] = 0;
        non_explore[uf.root(u)]--;
        non_explore[uf.root(v)]--;
    }
    complete(u);
    complete(v);

    return graphe[u][v];
}

• Subtask 1: 15 / 15
• Subtask 2: 0 / 27
• Subtask 3: 0 / 58