oj.uz

Submission #838332

# Submission time Handle Problem Language Result Execution time Memory
838332 2023-08-26T15:27:14 Z ma_moutahid Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 188 ms 24064 KB 
#include "supertrees.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;
#define vi vector<int>
#define vii vector<vi>
vi d;
vi h;

int parent(int x){
	if(d[x]==x)return x;
	return d[x]=parent(d[x]);
}

void connect(int a, int b){
	a=parent(a);
	b=parent(b);
	if(a==b)return;

	if(h[a]<h[b])swap(a,b);
	d[b]=a;
	if(h[a]==h[b])h[a]++;
}



int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	vii answer(n,vi(n));
	d.resize(n);h.resize(n,1);for(int i=0;i<n;i++)d[i]=i;
	for (int i = 0; i < n; i++) {
		for(int j=i+1;j<n;j++)if(p[i][j])connect(i,j);
	}
	vi bp(n,-1);
	vector<set<int>>bs;
	for(int i=0;i<n;i++){
		int pr=parent(i);
		if(h[pr]<=1)continue;
		if(bp[pr]==-1 ){
			bp[pr]=bs.size();
			bs.resize(bs.size()+1);
			
		}
		bs[bp[pr]].insert(i);
	}

	for( auto &s:bs){
		vector<set<int>>sets;
		vi pr(n,-1);
		for(auto itr1=s.begin();itr1!=s.end();itr1++){
			int a=*itr1;
			if(pr[a]==-1){
				pr[a]=sets.size();
				sets.resize(sets.size()+1);
				sets[pr[a]].insert(a);
			}
			for( auto itr2=itr1;itr2!=s.end();itr2++){
				int b=*itr2;
				if(p[a][b]==0)return 0;
				if(p[a][b]==1){
					pr[b]=pr[a];
					sets[pr[a]].insert(b);
					
				}
			}
		}
		vi v;
		for( auto &st:sets){
			v.push_back(*st.begin());
			for(auto itr=st.begin();next(itr)!=st.end();itr++){
				answer[(*itr)][(*next(itr))]=1;
				answer[*next(itr)][*itr]=1;
				for(auto itr2=next(itr);itr2!=st.end();itr2++){
					if(p[*itr][*itr2]>1)return 0;
				}
			}
		}
		int sz=v.size();
	
		if(sz<=1)continue;
		if(sz==2)return 0;
		int num=p[v[0]][v[sz-1]];
		answer[v[0]][v[sz-1]]=1;
		answer[v[sz-1]][v[0]]=1;
		for(int i=0;i<sz-1;i++){
			if(p[i][i+1]!=num)return 0;
			answer[i][i+1]=1;
			answer[i+1][i]=1;
		}
		if(num ==3 ){
			answer[0][2]=1;
			answer[2][0]=1;
		}
		
	}



	build(answer);
	return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 170 ms 22012 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 170 ms 22012 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1104 KB Output is correct
13 Correct 155 ms 21980 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 716 KB Output is correct
17 Correct 69 ms 12164 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 39 ms 5708 KB Output is correct
21 Correct 155 ms 22100 KB Output is correct
22 Correct 157 ms 22032 KB Output is correct
23 Correct 163 ms 21980 KB Output is correct
24 Correct 154 ms 22016 KB Output is correct
25 Correct 66 ms 12172 KB Output is correct
26 Correct 67 ms 12160 KB Output is correct
27 Correct 167 ms 22024 KB Output is correct
28 Correct 165 ms 22024 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 216 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 7 ms 1236 KB Output is correct
9 Correct 188 ms 23936 KB Output is correct
10 Correct 1 ms 300 KB Output is correct
11 Correct 1 ms 292 KB Output is correct
12 Correct 7 ms 1236 KB Output is correct
13 Correct 165 ms 24032 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 852 KB Output is correct
17 Correct 70 ms 14076 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 300 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Incorrect 17 ms 3796 KB Answer gives possible 0 while actual possible 1
22 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 304 KB Output is correct
4 Correct 39 ms 6192 KB Output is correct
5 Correct 155 ms 24064 KB Output is correct
6 Correct 167 ms 24052 KB Output is correct
7 Correct 163 ms 24060 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Incorrect 17 ms 3704 KB Answer gives possible 0 while actual possible 1
10 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 170 ms 22012 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1104 KB Output is correct
13 Correct 155 ms 21980 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 716 KB Output is correct
17 Correct 69 ms 12164 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 39 ms 5708 KB Output is correct
21 Correct 155 ms 22100 KB Output is correct
22 Correct 157 ms 22032 KB Output is correct
23 Correct 163 ms 21980 KB Output is correct
24 Correct 154 ms 22016 KB Output is correct
25 Correct 66 ms 12172 KB Output is correct
26 Correct 67 ms 12160 KB Output is correct
27 Correct 167 ms 22024 KB Output is correct
28 Correct 165 ms 22024 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 216 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1236 KB Output is correct
37 Correct 188 ms 23936 KB Output is correct
38 Correct 1 ms 300 KB Output is correct
39 Correct 1 ms 292 KB Output is correct
40 Correct 7 ms 1236 KB Output is correct
41 Correct 165 ms 24032 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 3 ms 852 KB Output is correct
45 Correct 70 ms 14076 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 300 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Incorrect 17 ms 3796 KB Answer gives possible 0 while actual possible 1
50 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 7 ms 1108 KB Output is correct
7 Correct 170 ms 22012 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 7 ms 1104 KB Output is correct
13 Correct 155 ms 21980 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 3 ms 716 KB Output is correct
17 Correct 69 ms 12164 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 39 ms 5708 KB Output is correct
21 Correct 155 ms 22100 KB Output is correct
22 Correct 157 ms 22032 KB Output is correct
23 Correct 163 ms 21980 KB Output is correct
24 Correct 154 ms 22016 KB Output is correct
25 Correct 66 ms 12172 KB Output is correct
26 Correct 67 ms 12160 KB Output is correct
27 Correct 167 ms 22024 KB Output is correct
28 Correct 165 ms 22024 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 216 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 212 KB Output is correct
36 Correct 7 ms 1236 KB Output is correct
37 Correct 188 ms 23936 KB Output is correct
38 Correct 1 ms 300 KB Output is correct
39 Correct 1 ms 292 KB Output is correct
40 Correct 7 ms 1236 KB Output is correct
41 Correct 165 ms 24032 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 3 ms 852 KB Output is correct
45 Correct 70 ms 14076 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 300 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Incorrect 17 ms 3796 KB Answer gives possible 0 while actual possible 1
50 Halted 0 ms 0 KB -