Submission #581375

#	Time	Username	Problem	Language	Result	Execution time	Memory
581375		wdjpng	Game (IOI14_game)	C++17	42 / 100	1069 ms	4524 KiB

game

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

#define int long long
#define rep(i,n) for(int i = 0; i < n; i++)
#define all(a) a.begin(), a.end()
using namespace std;

int n;
vector<vector<bool>>forb;
void initialize(signed N) {
    n=N;
    forb.assign(n,vector<bool>(n,false));
}


vector<bool>vis;
void dfs(int v, vector<vector<int>>&E)
{
    vis[v]=true;
    for(int w : E[v]) if(!vis[w]) dfs(w, E);
}

bool con()
{
    vector<vector<int>>E(n);
    rep(i,n) rep(j,n) if(i!=j&&!forb[i][j]) E[i].push_back(j);

    vis.assign(n,false);
    dfs(0,E);
    return count(all(vis),true)==n;
}

signed hasEdge(signed u, signed v) {
    forb[u][v]=forb[v][u]=true;
    if(con()) return 0;
    else {
        forb[u][v]=forb[v][u]=false;
        return 1;
    }
}

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