oj.uz

Submission #1114833

# Submission time Handle Problem Language Result Execution time Memory
1114833 2024-11-19T16:53:08 Z presko Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 155 ms 24136 KB 
#include "supertrees.h"
#include <iostream>
#include <vector>
#include <algorithm>
#define MAXN 1010
using namespace std;
int parent[MAXN];
vector<pair<int,int>> used[MAXN];
bool done[MAXN];
int find(int curr)
{
    if(parent[curr]==curr)return curr;
    return parent[curr]=find(parent[curr]);
}
void unite(int a, int b, int t)
{
    a=find(a);
    b=find(b);
    if(a==b)return;
    if(used[a].size()<used[b].size())swap(a,b);
    parent[b]=a;
    used[a].push_back({t,b});
    for(int i=0;i<used[b].size();i++)
    {
        if(used[b][i].second==b)continue;
        used[a].push_back(used[b][i]);
    }
}
int construct(vector<vector<int>> p) {
	int n = p.size();
	vector<vector<int>> ans;
	for(int i=0;i<n;i++)
    {
        vector<int> dump(n,0);
        ans.push_back(dump);
        parent[i]=i;
        used[i]={{1,i}};
    }
	for (int i = 0; i < n; i++)
    {
		for(int j=0;j<n;j++)
		{
		    if(i==j)continue;
		    if(p[i][j]==1){unite(i,j,1);}
		    if(p[i][j]==2){unite(i,j,2);}
		}
	}
	for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++)
        {
            if(p[i][j]==0)
            {
                if(find(i)==find(j))return 0;
            }
        }
    }
	for(int i=0;i<n;i++)
    {
        sort(used[i].begin(),used[i].end());
    }
	for(int i=0;i<n;i++)
    {
        int x=find(i);
        if(done[x])continue;
        for(int j=1;j<used[x].size();j++)
        {
            int val=used[x][j].second,t=used[x][j].first;
            if(t==0 || t==2 || used[x][j-1].first==0)continue;
            ans[used[x][j-1].second][val]=1;
            ans[val][used[x][j-1].second]=1;
        }
        for(int j=1;j<used[x].size();j++)
        {
            int val=used[x][j].second,t=used[x][j].first;
            if(t==0 || t==1)continue;
            if(used[x][j-1].first==1)
            {
                int left=used[x].size()-j;
                if(left==1)return 0;
                if(left==2)
                {
                    ans[used[x][j-1].second][val]=1;
                    ans[val][used[x][j-1].second]=1;
                    ans[used[x][j-1].second][used[x][j+1].second]=1;
                    ans[used[x][j+1].second][used[x][j-1].second]=1;
                }
                else
                {
                    ans[used[x][j-1].second][val]=1;
                    ans[val][used[x][j-1].second]=1;
                }
                continue;
            }
            ans[used[x][j-1].second][val]=1;
            ans[val][used[x][j-1].second]=1;
        }
        done[x]=1;
    }
	build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'void unite(int, int, int)':
supertrees.cpp:23:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for(int i=0;i<used[b].size();i++)
      |                 ~^~~~~~~~~~~~~~~
supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:66:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   66 |         for(int j=1;j<used[x].size();j++)
      |                     ~^~~~~~~~~~~~~~~
supertrees.cpp:73:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |         for(int j=1;j<used[x].size();j++)
      |                     ~^~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 6 ms 1360 KB Output is correct
7 Correct 138 ms 22088 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 6 ms 1360 KB Output is correct
7 Correct 138 ms 22088 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 6 ms 1360 KB Output is correct
13 Correct 120 ms 22060 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 4 ms 964 KB Output is correct
17 Correct 74 ms 14152 KB Output is correct
18 Correct 1 ms 504 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 32 ms 6224 KB Output is correct
21 Correct 126 ms 24136 KB Output is correct
22 Correct 136 ms 24136 KB Output is correct
23 Correct 129 ms 24136 KB Output is correct
24 Correct 123 ms 24136 KB Output is correct
25 Correct 69 ms 14116 KB Output is correct
26 Correct 59 ms 14248 KB Output is correct
27 Correct 134 ms 24100 KB Output is correct
28 Correct 127 ms 24136 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 2 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 6 ms 1360 KB Output is correct
9 Correct 139 ms 22088 KB Output is correct
10 Incorrect 1 ms 336 KB Too few ways to get from 0 to 1, should be 2 found 1
11 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 47 ms 5708 KB Output is correct
5 Correct 136 ms 22088 KB Output is correct
6 Correct 140 ms 22204 KB Output is correct
7 Correct 155 ms 22200 KB Output is correct
8 Incorrect 1 ms 336 KB Too few ways to get from 0 to 1, should be 2 found 1
9 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 6 ms 1360 KB Output is correct
7 Correct 138 ms 22088 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 6 ms 1360 KB Output is correct
13 Correct 120 ms 22060 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 4 ms 964 KB Output is correct
17 Correct 74 ms 14152 KB Output is correct
18 Correct 1 ms 504 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 32 ms 6224 KB Output is correct
21 Correct 126 ms 24136 KB Output is correct
22 Correct 136 ms 24136 KB Output is correct
23 Correct 129 ms 24136 KB Output is correct
24 Correct 123 ms 24136 KB Output is correct
25 Correct 69 ms 14116 KB Output is correct
26 Correct 59 ms 14248 KB Output is correct
27 Correct 134 ms 24100 KB Output is correct
28 Correct 127 ms 24136 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 2 ms 336 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 1 ms 336 KB Output is correct
36 Correct 6 ms 1360 KB Output is correct
37 Correct 139 ms 22088 KB Output is correct
38 Incorrect 1 ms 336 KB Too few ways to get from 0 to 1, should be 2 found 1
39 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 6 ms 1360 KB Output is correct
7 Correct 138 ms 22088 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 6 ms 1360 KB Output is correct
13 Correct 120 ms 22060 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 4 ms 964 KB Output is correct
17 Correct 74 ms 14152 KB Output is correct
18 Correct 1 ms 504 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 32 ms 6224 KB Output is correct
21 Correct 126 ms 24136 KB Output is correct
22 Correct 136 ms 24136 KB Output is correct
23 Correct 129 ms 24136 KB Output is correct
24 Correct 123 ms 24136 KB Output is correct
25 Correct 69 ms 14116 KB Output is correct
26 Correct 59 ms 14248 KB Output is correct
27 Correct 134 ms 24100 KB Output is correct
28 Correct 127 ms 24136 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 2 ms 336 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 1 ms 336 KB Output is correct
36 Correct 6 ms 1360 KB Output is correct
37 Correct 139 ms 22088 KB Output is correct
38 Incorrect 1 ms 336 KB Too few ways to get from 0 to 1, should be 2 found 1
39 Halted 0 ms 0 KB -