Submission #1139455

#	Time	Username	Problem	Language	Result	Execution time	Memory
1139455		mychecksedad	게임 (IOI14_game)	C++17	100 / 100	220 ms	16484 KiB

game

#include "game.h"
#include<bits/stdc++.h>
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
#define ff first
#define ss second
#define pii pair<int,int>
#define vi vector<int>
const int N = 1500+100, M = 1e5+10, K = 52, MX = 30;


int D[N][N];
struct Dsu {
    vector<int> s, p;
    int sz;
    void init(int n){
        sz = n;
        s.resize(n, 1);
        p.resize(n);
        for(int i = 0; i < n; ++i) p[i] = i;
        for(int i = 0; i < n; ++i){
            for(int j = 0; j < n; ++j){
                D[i][j] = i == j ? 0 : 1;
            }
        }
    }
    int find(int v){
        if(p[v] == v) return v;
        return (p[v] = find(p[v]));
    }
    void merge(int a, int b){
        a = find(a);
        b = find(b);
        if(a != b){
            if(s[a] > s[b]){
                swap(a, b);
            }
            s[b] += s[a];
            p[a] = b;
            sz--;
            for(int j = 0; j < p.size(); ++j){
                if(find(j) != find(a) && find(j) == j){
                    int w = find(a);
                    int x = find(j);
                    D[w][x] = D[a][x] + D[b][x];
                    D[x][w] = D[w][x];
                }
            }
        }
    }
};

Dsu d;
int nn;
void initialize(int n) {
    d.init(n);
    nn = n;
}
int check(int u, int v){
    if(d.find(u) == d.find(v)) return 0;
    if(D[d.find(u)][d.find(v)] == 1){
        d.merge(u, v);
        return 1;
    }
    D[d.find(u)][d.find(v)]--;
    D[d.find(v)][d.find(u)]--;
    return 0;
}
int hasEdge(int u, int v) {
    if(check(u, v) == 1){
        return 1;
    }
    return 0;
}

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