제출 #915391

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
915391		chirathnirodha	슈퍼트리 잇기 (IOI20_supertrees)	C++17	21 / 100	158 ms	24404 KiB

supertrees

#include "supertrees.h"
#include <vector>
using namespace std;
#define F first
#define S sedond
#define PB push_back
#define MP make_pair
#define	P push
#define I insert
typedef long long ll;
typedef long l;
typedef unsigned long long ull;

int uni[1000];
int fin(int x){
	if(uni[x]==x)return x;
	else return fin(uni[x]);
}
void merg(int x,int y){
	x=fin(x);
	y=fin(y);
	if(x<y)uni[y]=x;
	else uni[x]=y;
}
int construct(vector<vector<int>> p) {
	int n = p.size();
	vector<vector<int>>answer(n,vector<int>(n,0));
	for(int i=0;i<n;i++)uni[i]=i;
	for(int i=0;i<n;i++)for(int j=0;j<n;j++)if(p[i][j]==3)return 0;
	vector<int> v1[n],v2[n];
	for(int i=0;i<n;i++){
		for(int j=i+1;j<n;j++){
			if(p[i][j]==1 && fin(i)!=fin(j)){
				answer[i][j]=answer[j][i]=1;
				merg(i,j);
			}
		}
	}
	for(int i=0;i<n;i++)for(int j=i+1;j<n;j++)if(p[i][j]!=1 && fin(i)==fin(j))return 0;
	for(int i=0;i<n;i++){
		int comsiz=1;
		for(int j=i+1;j<n;j++){
			if(p[i][j]==2 && fin(i)!=fin(j)){
				answer[i][j]=answer[j][i]=1;
				merg(i,j);
				comsiz++;
			}
		}
		if(comsiz==2)return 0;
	}
	for(int i=0;i<n;i++)for(int j=i+1;j<n;j++)if(p[i][j]!=1 && fin(i)==fin(j))return 0;
	build(answer);
	return 1;
}

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