Submission #476968

#	Time	Username	Problem	Language	Result	Execution time	Memory
476968		JovanB	Game (IOI14_game)	C++17	100 / 100	456 ms	25176 KiB

game

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

const int N = 1500;

struct DSU{
    int n;
    int par[N+5];
    int edg[N+5][N+5];
    int outs[N+5];
    int sz[N+5];
    void init(int _n){
        n = _n;
        for(int i=1; i<=n; i++){
            par[i] = i;
            sz[i] = 1;
            outs[i] = 0;
            for(int j=1; j<=n; j++){
                edg[i][j] = 0;
            }
        }
    }
    int root(int x){ return (par[x] == x ? x : par[x] = root(par[x])); }
    bool povezi(int a, int b){
        a = root(a);
        b = root(b);
        if(a == b) return 1;
        if(sz[a] < sz[b]) swap(a, b);
        if(edg[a][b] != sz[a]*sz[b] - 1){
            outs[a]++, outs[b]++;
            edg[a][b]++, edg[b][a]++;
            return 0;
        }
        outs[a] -= edg[a][b];
        outs[b] -= edg[a][b];
        for(int i=1; i<=n; i++) edg[a][i] += edg[b][i], edg[i][a] += edg[i][b];
        outs[a] += outs[b];
        sz[a] += sz[b];
        par[b] = a;
        return 1;
    }
} dsu;

void initialize(int _n) {
    dsu.init(_n);
}

int hasEdge(int u, int v) {
    return dsu.povezi(u + 1, v + 1);
}

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