답안 #1014415

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1014415	2024-07-04T20:40:52 Z	Ahmed_Solyman	슈퍼트리 잇기 (IOI20_supertrees)	C++14	0 / 100	0 ms	348 KB

supertrees

/*
In the name of Allah
made by: Ahmed_Solyman
*/
#include <bits/stdc++.h>
#include <ext/rope>

using namespace std;
using namespace __gnu_cxx;
#pragma GCC optimize("-Ofast")
#pragma GCC optimize("-O1")
//-------------------------------------------------------------//
typedef long long ll;
typedef unsigned long long ull;
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define PI acos(-1)
#define lb lower_bound
#define ub upper_bound
#define all(v) v.begin(),v.end()
#define allr(v) v.rbegin(),v.rend()
#define sum_to(n) (n*(n+1))/2
#define pb push_back
#define pf push_front
#define fil(arr,x) memset(arr,x,sizeof(arr))
#define endl '\n'
const ll mod=1e9+7;
int dx[8]={0,1,0,-1,1,1,-1,-1};
int dy[8]={1,0,-1,0,1,-1,-1,1};
//-------------------------------------------------------------//
ll lcm(ll a,ll b)
{
    return (max(a,b)/__gcd(a,b))*min(a,b);
}
void person_bool(bool x)
{
    cout<<(x?"YES":"NO")<<endl;
}
void build(vector<vector<int>>b);
struct DSU{
    vector<int>P,sz;
    void init(int n){
        P.resize(n+5);
        sz.assign(n+5,1);
        for(int i=0;i<n+5;i++)P[i]=i;
    }
    int find(int node){
        if(P[node]==node)return node;
        return P[node]=find(P[node]);
    }
    bool unite(int a,int b){
        int p1=find(a);
        int p2=find(b);
        if(p1==p2){
            return 0;
        }
        if(sz[p1]>sz[p2]){
            swap(p1,p2);
        }
        P[p1]=p2;
        sz[p2]+=sz[p1];
        return 1;
    }
}d,dsu,dsu2;
int construct(vector<vector<int>> p){
    int n=p.size();
    dsu.init(n);
    dsu2.init(n);
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(p[i][j]==1)dsu.unite(i,j);
            if(p[i][j]==2)dsu2.unite(i,j);
        }
    }
    for(int i=0;i<n;i++){
        for(int j=i+1;j<n;j++){
            if(!p[i][j] && (dsu.find(i)==dsu.find(j) || dsu2.find(i)==dsu2.find(j))){
                return 0;
            }
            if(dsu.find(i)==dsu.find(j) && dsu2.find(i)==dsu2.find(j)){
                return 0;
            }
        }
    }
    
    vector<vector<int>>b(n,vector<int>(n));
    build(b);
    return 1;
}

Subtask #1
0 / 11.0

#	결과	메모리	Grader output
1	Correct	348 KB	Output is correct
2	Incorrect	348 KB	Too few ways to get from 0 to 1, should be 1 found 0
3	Halted	0 KB	-

Subtask #2
0 / 10.0

#	결과	메모리	Grader output
1	Correct	348 KB	Output is correct
2	Incorrect	348 KB	Too few ways to get from 0 to 1, should be 1 found 0
3	Halted	0 KB	-

Subtask #3
0 / 19.0

#	결과	메모리	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Incorrect	348 KB	Answer gives possible 1 while actual possible 0
5	Halted	0 KB	-