Submission #994819

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
994819	2024-06-08T06:47:02 Z	Newtonabc	Connecting Supertrees (IOI20_supertrees)	C++14	21 / 100	137 ms	24340 KB

supertrees

#include "supertrees.h"
#include<bits/stdc++.h>
using namespace std;
const int N=1e3+10;
vector<int> v;
int pa[N];
bool cy[N][N];
vector<int> adj[N];
bool vs[N];
void dfs(int u){
	vs[u]=true;
	if(adj[u].size()==1) v.push_back(u);
	for(int i=0;i<adj[u].size();i++){
		if(!vs[adj[u][i]]) dfs(adj[u][i]);
	}
}
int root(int x){
	if(pa[x]==x) return x;
	else return pa[x]=root(pa[x]);
}
int construct(vector<vector<int> > p) {
	int n = p.size();
	vector<vector<int> > answer;
	for (int i = 0; i < n; i++) {
		vector<int> row(n,0);
		answer.push_back(row);
	}
	for(int i=0;i<n;i++) pa[i]=i;
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(p[i][j]==1 && root(i)!=root(j)){
				answer[i][j]=1;
				answer[j][i]=1;
				pa[root(i)]=root(j);
			}
			if(p[i][j]==3) return 0;
		}
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			if(p[i][j]==0){
				if(root(i)==root(j)) return 0;
			}
		}
	}
	int cnt=0;
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			int a,b;
			if(p[i][j]==2){
				a=root(i),b=root(j);
				if(a==b) return 0;
				if(answer[a][b]==0) cnt++;
				answer[a][b]=1;
				answer[b][a]=1;
				adj[a].push_back(b);
				adj[b].push_back(a);
			}
		}
	}
	if(cnt==1) return 0;
	for(int i=0;i<n;i++){
		if(!vs[i]) dfs(i);
		if(v.empty()) continue;
		answer[v[0]][v[1]]=1;
		answer[v[1]][v[0]]=1;
		v.clear();
	}
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'void dfs(int)':
supertrees.cpp:13:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |  for(int i=0;i<adj[u].size();i++){
      |              ~^~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	5 ms	1244 KB	Output is correct
7	Correct	117 ms	24148 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	5 ms	1244 KB	Output is correct
7	Correct	117 ms	24148 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	468 KB	Output is correct
12	Correct	5 ms	1372 KB	Output is correct
13	Correct	116 ms	24148 KB	Output is correct
14	Correct	1 ms	600 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	3 ms	860 KB	Output is correct
17	Correct	62 ms	14120 KB	Output is correct
18	Correct	1 ms	344 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	31 ms	6444 KB	Output is correct
21	Correct	120 ms	24144 KB	Output is correct
22	Correct	117 ms	24144 KB	Output is correct
23	Correct	129 ms	24144 KB	Output is correct
24	Correct	118 ms	23968 KB	Output is correct
25	Correct	53 ms	14160 KB	Output is correct
26	Correct	51 ms	14264 KB	Output is correct
27	Correct	137 ms	24340 KB	Output is correct
28	Correct	120 ms	24144 KB	Output is correct

Subtask #3
0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	344 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	5 ms	1372 KB	Output is correct
9	Correct	124 ms	24100 KB	Output is correct
10	Incorrect	0 ms	344 KB	Too many ways to get from 0 to 3, should be 2 found no less than 3
11	Halted	0 ms	0 KB	-

Subtask #4
0 / 35.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	1 ms	464 KB	Output is correct
4	Correct	33 ms	6376 KB	Output is correct
5	Correct	120 ms	24144 KB	Output is correct
6	Correct	123 ms	24100 KB	Output is correct
7	Correct	136 ms	24148 KB	Output is correct
8	Incorrect	0 ms	348 KB	Too many ways to get from 0 to 2, should be 2 found no less than 3
9	Halted	0 ms	0 KB	-

Subtask #5
0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	5 ms	1244 KB	Output is correct
7	Correct	117 ms	24148 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	468 KB	Output is correct
12	Correct	5 ms	1372 KB	Output is correct
13	Correct	116 ms	24148 KB	Output is correct
14	Correct	1 ms	600 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	3 ms	860 KB	Output is correct
17	Correct	62 ms	14120 KB	Output is correct
18	Correct	1 ms	344 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	31 ms	6444 KB	Output is correct
21	Correct	120 ms	24144 KB	Output is correct
22	Correct	117 ms	24144 KB	Output is correct
23	Correct	129 ms	24144 KB	Output is correct
24	Correct	118 ms	23968 KB	Output is correct
25	Correct	53 ms	14160 KB	Output is correct
26	Correct	51 ms	14264 KB	Output is correct
27	Correct	137 ms	24340 KB	Output is correct
28	Correct	120 ms	24144 KB	Output is correct
29	Correct	0 ms	344 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	0 ms	344 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	0 ms	348 KB	Output is correct
36	Correct	5 ms	1372 KB	Output is correct
37	Correct	124 ms	24100 KB	Output is correct
38	Incorrect	0 ms	344 KB	Too many ways to get from 0 to 3, should be 2 found no less than 3
39	Halted	0 ms	0 KB	-

Subtask #6
0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	5 ms	1244 KB	Output is correct
7	Correct	117 ms	24148 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	0 ms	468 KB	Output is correct
12	Correct	5 ms	1372 KB	Output is correct
13	Correct	116 ms	24148 KB	Output is correct
14	Correct	1 ms	600 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	3 ms	860 KB	Output is correct
17	Correct	62 ms	14120 KB	Output is correct
18	Correct	1 ms	344 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	31 ms	6444 KB	Output is correct
21	Correct	120 ms	24144 KB	Output is correct
22	Correct	117 ms	24144 KB	Output is correct
23	Correct	129 ms	24144 KB	Output is correct
24	Correct	118 ms	23968 KB	Output is correct
25	Correct	53 ms	14160 KB	Output is correct
26	Correct	51 ms	14264 KB	Output is correct
27	Correct	137 ms	24340 KB	Output is correct
28	Correct	120 ms	24144 KB	Output is correct
29	Correct	0 ms	344 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	0 ms	344 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	0 ms	348 KB	Output is correct
36	Correct	5 ms	1372 KB	Output is correct
37	Correct	124 ms	24100 KB	Output is correct
38	Incorrect	0 ms	344 KB	Too many ways to get from 0 to 3, should be 2 found no less than 3
39	Halted	0 ms	0 KB	-

Submission #994819

Compilation message

Subtask #1 11.0 / 11.0

Subtask #2 10.0 / 10.0

Subtask #3 0 / 19.0

Subtask #4 0 / 35.0

Subtask #5 0 / 21.0

Subtask #6 0 / 4.0

Subtask #1
11.0 / 11.0

Subtask #2
10.0 / 10.0

Subtask #3
0 / 19.0

Subtask #4
0 / 35.0

Subtask #5
0 / 21.0

Subtask #6
0 / 4.0