제출 #616017

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
616017		PanTkd	슈퍼트리 잇기 (IOI20_supertrees)	C++14	11 / 100	176 ms	22028 KiB

supertrees

//
//  main.cpp
//
//  Created by Panagiotis Chadjicostas on
//  Copyright © Panagiotis Hadjicostas. All rights reserved.
//
#include "supertrees.h"

#include <iostream>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <fstream>
#include <iomanip>
#include <iterator>
#include <limits>
#include <list>
#include <cstring>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>
#include <unordered_map>

using namespace std;

typedef int ll;
typedef vector<ll> vi;
typedef pair<ll,ll> ii;
#define fo(i,a,b) for(int i = a; i<=b; i++)
#define f(i,b) for(int i=0;i<b;i++)
#define F first
#define S second
#define sz size
#define ls s,m,idx<<1
#define rs m+1,e,idx<<1|1
const ll MOD=ll(1e9)+7;
const ll MAXN=2*ll(1e6);
void checker(){
    ll n=rand()%20+2;
    vi a(n,ll());
    for(ll i=0;i<n;i++){
        a[i]=rand()%20+2;
    }
    for(ll b=0;b<(1<<n);b++){
        vi on,off;
        for(ll i=0;i<n;i++){
            if(i&(1<<i)){
                on.push_back(i);
            }
            else{
                off.push_back(i);
            }
        }
    }
}
///////////////////////////////////////////////////////////////////////
void build(vector<vector<ll> > b);
vi parent ;
int find(int x){
    if(parent[x]==x)
        return x;
    parent[x]=find(parent[x]);
    return parent[x];
}
void onion(int x, int y){
    parent[find(y)]=find(x);
    return;
}
vector<vi> A;
vi V;
void dfs(ll s){
    V[s]=1;

    for(auto x:A[s])
        if(!V[x])
            dfs(x);
}
int construct(vector<vector<ll> > p)
{
    ll s=0;
    ll n=p.size();
    vector<vector<ll> > ans (n, vector<int>(n, 0));
    parent.assign(n,0);
    for(ll i=0;i<n;i++)
        parent[i]=i;

    for(ll i=0;i<n;i++)
        for(ll j=0;j<n;j++){
            if(p[i][j]==1){
                onion(i,j);
            }
        }
    V.assign(n,0);
    A.assign(n,vi());

    for(ll i=0;i<n;i++){
        A[i].push_back(parent[i]);
        if(i!=parent[i]){
            ans[i][parent[i]]=1;
            ans[parent[i]][i]=1;
        }
        //cout<<i<<' '<<parent[i]<<endl;
        A[parent[i]].push_back(i);
    }
    ll counter=0;
    for(ll i=0;i<n;i++){
        if(!V[i]){
            dfs(i);
            counter++;
        }
    }
   // cout<<"Vrika tosa diaforetika: "<<counter<<endl;


    build(ans);
    return 1;
}

컴파일 시 표준 에러 (stderr) 메시지

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:84:8: warning: unused variable 's' [-Wunused-variable]
   84 |     ll s=0;
      |        ^

• Subtask 1: 11 / 11
• Subtask 2: 0 / 10
• Subtask 3: 0 / 19
• Subtask 4: 0 / 35
• Subtask 5: 0 / 21
• Subtask 6: 0 / 4