Submission #473625

#	Time	Username	Problem	Language	Result	Execution time	Memory
473625		dung11112003	Game (IOI14_game)	C++11	100 / 100	480 ms	25372 KiB

game

#include "game.h"
#include <bits/stdc++.h>

#define taskname ""
#define pb push_back
#define eb emplace_back
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define for0(i, n) for (int i = 0; i < (int)(n); ++i)
#define for1(i, n) for (int i = 1; i <= (int)(n); ++i)
#define ford(i, n) for (int i = (int)(n) - 1; i >= 0; --i)
#define fore(i, a, b) for (int i = (int)(a); i <= (int)(b); ++i)

using namespace std;

typedef long long ll;
typedef long double ld;
typedef complex <ld> cd;
typedef vector <cd> vcd;
typedef vector <int> vi;

template<class T> using v2d = vector <vector <T> >;
template<class T> bool uin(T &a, T b)
{
    return a > b ? (a = b, true) : false;
}
template<class T> bool uax(T &a, T b)
{
    return a < b ? (a = b, true) : false;
}

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

int cur_n;
vector <vector <int>> mat;
vector <int> p;

int root(int u)
{
    return p[u] < 0 ? u : p[u] = root(p[u]);
}

void initialize(int n)
{
    mat.assign(n, vector <int> (n));
    p.assign(n, -1);
    cur_n = n;
}

int hasEdge(int u, int v)
{
    u = root(u);
    v = root(v);
    if (u == v)
    {
        return 0;
    }
    if (p[u] > p[v])
    {
        swap(u, v);
    }
    mat[u][v]++;
    mat[v][u]++;
    if (mat[u][v] == p[u] * p[v])
    {
        //yes
        //merge u and v
        p[u] += p[v];
        p[v] = u;
        for (int i = 0; i < cur_n; i++)
        {
            mat[u][i] += mat[v][i];
            mat[i][u] += mat[i][v];
        }
        mat[u][u] = mat[v][v] = mat[u][v] = mat[v][u] = 0;
        return 1;
    }
    return 0;
}

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