oj.uz

Submission #1114831

# Submission time Handle Problem Language Result Execution time Memory
1114831 2024-11-19T16:49:19 Z presko Connecting Supertrees (IOI20_supertrees) C++14
11 / 100
 165 ms 24152 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++)
    {
        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:56:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |         for(int j=1;j<used[x].size();j++)
      |                     ~^~~~~~~~~~~~~~~
supertrees.cpp:63:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         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 132 ms 22088 KB Output is correct

Subtask #2
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 132 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 133 ms 22068 KB Output is correct
14 Incorrect 1 ms 336 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -

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 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 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 7 ms 1360 KB Output is correct
9 Correct 134 ms 24152 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 36 ms 6300 KB Output is correct
5 Correct 141 ms 24104 KB Output is correct
6 Correct 131 ms 24136 KB Output is correct
7 Correct 165 ms 24028 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 132 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 133 ms 22068 KB Output is correct
14 Incorrect 1 ms 336 KB Answer gives possible 1 while actual possible 0
15 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 132 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 133 ms 22068 KB Output is correct
14 Incorrect 1 ms 336 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -