oj.uz

Submission #838339

# Submission time Handle Problem Language Result Execution time Memory
838339 2023-08-26T15:47:31 Z ma_moutahid Connecting Supertrees (IOI20_supertrees) C++17
21 / 100
 163 ms 22100 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 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 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 159 ms 22020 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 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 159 ms 22020 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 154 ms 21964 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 68 ms 12108 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 38 ms 5708 KB Output is correct
21 Correct 149 ms 22092 KB Output is correct
22 Correct 149 ms 22068 KB Output is correct
23 Correct 157 ms 22100 KB Output is correct
24 Correct 157 ms 22100 KB Output is correct
25 Correct 63 ms 12108 KB Output is correct
26 Correct 64 ms 12108 KB Output is correct
27 Correct 163 ms 22080 KB Output is correct
28 Correct 148 ms 22004 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 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 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 6 ms 1108 KB Output is correct
9 Correct 151 ms 22024 KB Output is correct
10 Correct 0 ms 336 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 146 ms 22048 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 724 KB Output is correct
17 Correct 67 ms 12176 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Incorrect 37 ms 5708 KB Too many ways to get from 0 to 1, should be 0 found no less than 1
22 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 43 ms 5836 KB Output is correct
5 Correct 155 ms 22020 KB Output is correct
6 Correct 153 ms 22024 KB Output is correct
7 Correct 162 ms 22092 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Incorrect 37 ms 5716 KB Too many ways to get from 0 to 1, should be 0 found no less than 1
10 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 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 159 ms 22020 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 154 ms 21964 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 68 ms 12108 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 38 ms 5708 KB Output is correct
21 Correct 149 ms 22092 KB Output is correct
22 Correct 149 ms 22068 KB Output is correct
23 Correct 157 ms 22100 KB Output is correct
24 Correct 157 ms 22100 KB Output is correct
25 Correct 63 ms 12108 KB Output is correct
26 Correct 64 ms 12108 KB Output is correct
27 Correct 163 ms 22080 KB Output is correct
28 Correct 148 ms 22004 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 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 6 ms 1108 KB Output is correct
37 Correct 151 ms 22024 KB Output is correct
38 Correct 0 ms 336 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 6 ms 1108 KB Output is correct
41 Correct 146 ms 22048 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 724 KB Output is correct
45 Correct 67 ms 12176 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Incorrect 37 ms 5708 KB Too many ways to get from 0 to 1, should be 0 found no less than 1
50 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 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 159 ms 22020 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 154 ms 21964 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 3 ms 724 KB Output is correct
17 Correct 68 ms 12108 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 38 ms 5708 KB Output is correct
21 Correct 149 ms 22092 KB Output is correct
22 Correct 149 ms 22068 KB Output is correct
23 Correct 157 ms 22100 KB Output is correct
24 Correct 157 ms 22100 KB Output is correct
25 Correct 63 ms 12108 KB Output is correct
26 Correct 64 ms 12108 KB Output is correct
27 Correct 163 ms 22080 KB Output is correct
28 Correct 148 ms 22004 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 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 0 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 6 ms 1108 KB Output is correct
37 Correct 151 ms 22024 KB Output is correct
38 Correct 0 ms 336 KB Output is correct
39 Correct 1 ms 212 KB Output is correct
40 Correct 6 ms 1108 KB Output is correct
41 Correct 146 ms 22048 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 724 KB Output is correct
45 Correct 67 ms 12176 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Incorrect 37 ms 5708 KB Too many ways to get from 0 to 1, should be 0 found no less than 1
50 Halted 0 ms 0 KB -