Submission #974025

#	Time	Username	Problem	Language	Result	Execution time	Memory
974025		AliHasanli	슈퍼트리 잇기 (IOI20_supertrees)	C++17	0 / 100	1 ms	496 KiB

supertrees

#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
int parent[1001],siz[1001];
void initial()
{
	for(int i=0;i<1001;i++)
	{
		siz[i]=1;
		parent[i]=i;
	}
}
int findd(int a)
{
	if(a==parent[a])return a;
	return parent[a]=findd(parent[a]);
}
bool unionn(int a,int b)
{
	a=findd(a);
	b=findd(b);
	if(a!=b)
	{
		if(siz[a]<siz[b])swap(a,b);
		parent[b]=a;
		siz[a]+=siz[b];
		return 1;
	}
	return 0;
}
int construct(vector<vector<int> > p) {
	initial();
	int n = p.size();
	vector<vector<int> > answer(n, vector<int>(n, 0));
	for(int i=0;i<n;i++)
		for(int j=0;j<n;j++)
			if(p[i][j]==3)return 0;
	for(int i=0;i<n-1;i++)
		for(int j=i+1;j<n;j++)
			answer[i][j]=p[i][j],answer[j][i]=p[j][i];
	for(int i=0;i<n-1;i++)
		for(int j=i+1;j<n;j++)
			if(p[i][j]==0 && !unionn(i,j))
			return 0;
	build(answer);
	return 1;
}

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