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Submission #301122

# Submission time Handle Problem Language Result Execution time Memory
301122 2020-09-17T16:39:21 Z ElyesChaabouni Connecting Supertrees (IOI20_supertrees) C++14
56 / 100
 278 ms 22264 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

int anc[200000], anc1[200000];
void get_anc(int x)
{
	int cu=anc[x];
	while(cu!=anc[cu])
		cu=anc[cu];
	anc[x]=cu;
}
void unite(int x, int y)
{
	get_anc(x);
	get_anc(y);
	if(anc[x]==anc[y])
		return;
	anc[anc[y]]=anc[x];
	anc[y]=anc[x];
}
void get_anc1(int x)
{
	int cu=anc1[x];
	while(cu!=anc1[cu])
		cu=anc1[cu];
	anc1[x]=cu;
}
void unite1(int x, int y)
{
	get_anc1(x);
	get_anc1(y);
	anc1[anc1[y]]=anc1[x];
	anc1[y]=anc1[x];
}
/*void build(vector<vector<int> >x)
{
	for(int i = 0; i < 2; i++)
	{
		for(int j = 0; j < 2; j++)
			cout << x[j][i] << ' ';
		cout << '\n';
	}
}*/
int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	std::vector<std::vector<int>> ans;
	for (int i = 0; i < n; i++) {
		std::vector<int> row;
		row.resize(n);
		ans.push_back(row);
	}
	for(int i = 0; i < n; i++)
		for(int j = 0; j < n; j++)
			ans[i][j]=0;
	for(int i = 0; i < n; i++)
		anc[i]=i;
	for(int i = 0; i < n; i++)
	{
		for(int j = 0; j < n; j++)
		{
			if(p[i][j]==1)
				unite(i, j);
		}
	}
	for(int i = 0; i < n; i++)
	{
		get_anc(i);
		//cout << anc[i] << ' ';
	}
	for(int i = 0; i < n; i++)
	{
		for(int j = 0; j < n; j++)
		{
			if(((anc[i]==anc[j]) && (p[i][j]!=1)) || ((anc[i]!=anc[j]) && (p[i][j]==1)))
				return 0;
			if(p[i][j]==3)
				return 0;
		}
	}
	for(int i = 0; i < n; i++)
	{
		vector<int>v;
		for(int j = 0; j < n; j++)
		{
			if(anc[j]==i)
				v.push_back(j);
		}
		for(int j = 0; j < ((int)(v.size()))-1; j++)
		{
			ans[v[j]][v[j+1]]=1;
			ans[v[j+1]][v[j]]=1;
		}
	}
	for(int i = 0; i < n; i++)
		anc1[i]=-1;
	for(int i = 0; i < n; i++)
	{
		bool found=0;
		for(int j = 0; j < n && !found; j++)
		{
			if(anc[j]==i)
				found=1;
		}
		if(found)
			anc1[i]=i;
	}
	for(int i = 0; i < n; i++)
	{
		for(int j = 0; j < n; j++)
		{
			if(p[i][j]==2)
			{
				get_anc(i);
				get_anc(j);
				unite1(anc[i], anc[j]);
			}
		}
	}
	for(int i = 0; i < n; i++)
	{
		vector<int>v;
		for(int j = 0; j < n; j++)
		{
			if(anc1[j]==i)
				v.push_back(j);
		}
		for(int j = 0; j < ((int)(v.size()))-1; j++)
		{
			ans[v[j]][v[j+1]]=1;
			ans[v[j+1]][v[j]]=1;
		}
		if(v.size() == 2)
			return 0;
		if(v.size() > 2)
		{
			ans[v[0]][v.back()]=1;
			ans[v.back()][v[0]]=1;
		}
	}
	for(int i = 0; i < n; i++)
		ans[i][i]=0;
	build(ans);
	return 1;
}
/*int main()
{
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
	vector<vector<int> >a;
	int n;
	cin >> n;
	for(int i = 0; i < 2; i++)
	{
		vector<int>x;
		x.resize(2);
		a.push_back(x);
	}
	for(int i = 0; i < 2; i++)
		for(int j = 0; j < 2; j++)
			cin >> a[i][j];
	cout << construct(a) << '\n';
}*/

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 12 ms 1280 KB Output is correct
7 Correct 262 ms 22136 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 12 ms 1280 KB Output is correct
7 Correct 262 ms 22136 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 248 ms 22136 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 115 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 83 ms 5880 KB Output is correct
21 Correct 258 ms 22136 KB Output is correct
22 Correct 245 ms 22136 KB Output is correct
23 Correct 256 ms 22264 KB Output is correct
24 Correct 244 ms 22136 KB Output is correct
25 Correct 100 ms 12152 KB Output is correct
26 Correct 109 ms 12152 KB Output is correct
27 Correct 274 ms 22232 KB Output is correct
28 Correct 261 ms 22136 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 10 ms 1280 KB Output is correct
9 Correct 272 ms 22072 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 13 ms 1280 KB Output is correct
13 Correct 276 ms 22136 KB Output is correct
14 Incorrect 1 ms 256 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 70 ms 5880 KB Output is correct
5 Correct 267 ms 22136 KB Output is correct
6 Correct 252 ms 22136 KB Output is correct
7 Correct 268 ms 22136 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 65 ms 5880 KB Output is correct
10 Correct 266 ms 22136 KB Output is correct
11 Correct 250 ms 22104 KB Output is correct
12 Correct 266 ms 22136 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 65 ms 5816 KB Output is correct
17 Correct 278 ms 22264 KB Output is correct
18 Correct 264 ms 22136 KB Output is correct
19 Correct 240 ms 22136 KB Output is correct
20 Correct 249 ms 22264 KB Output is correct

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 12 ms 1280 KB Output is correct
7 Correct 262 ms 22136 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 248 ms 22136 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 115 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 83 ms 5880 KB Output is correct
21 Correct 258 ms 22136 KB Output is correct
22 Correct 245 ms 22136 KB Output is correct
23 Correct 256 ms 22264 KB Output is correct
24 Correct 244 ms 22136 KB Output is correct
25 Correct 100 ms 12152 KB Output is correct
26 Correct 109 ms 12152 KB Output is correct
27 Correct 274 ms 22232 KB Output is correct
28 Correct 261 ms 22136 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 10 ms 1280 KB Output is correct
37 Correct 272 ms 22072 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 0 ms 384 KB Output is correct
40 Correct 13 ms 1280 KB Output is correct
41 Correct 276 ms 22136 KB Output is correct
42 Incorrect 1 ms 256 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 12 ms 1280 KB Output is correct
7 Correct 262 ms 22136 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 10 ms 1280 KB Output is correct
13 Correct 248 ms 22136 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 5 ms 768 KB Output is correct
17 Correct 115 ms 12152 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 83 ms 5880 KB Output is correct
21 Correct 258 ms 22136 KB Output is correct
22 Correct 245 ms 22136 KB Output is correct
23 Correct 256 ms 22264 KB Output is correct
24 Correct 244 ms 22136 KB Output is correct
25 Correct 100 ms 12152 KB Output is correct
26 Correct 109 ms 12152 KB Output is correct
27 Correct 274 ms 22232 KB Output is correct
28 Correct 261 ms 22136 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 10 ms 1280 KB Output is correct
37 Correct 272 ms 22072 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 0 ms 384 KB Output is correct
40 Correct 13 ms 1280 KB Output is correct
41 Correct 276 ms 22136 KB Output is correct
42 Incorrect 1 ms 256 KB Answer gives possible 1 while actual possible 0
43 Halted 0 ms 0 KB -