oj.uz

Submission #888220

# Submission time Handle Problem Language Result Execution time Memory
888220 2023-12-16T14:13:28 Z 12345678 Connecting Supertrees (IOI20_supertrees) C++17
30 / 100
 167 ms 22356 KB 
#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

const int nx=1e3+5;
bool vs[nx];
vector<int> c[nx], l[nx];

int construct(std::vector<std::vector<int>> p) {
	int n = p.size(), cnt=0;
    for (int i=0; i<n; i++) for (int j=0; j<n; j++) if (p[i][j]==3) return 0;
	vector<vector<int>> answer(n, vector<int> (n, 0));
    vector<int> h;
	for (int i=0; i<n; i++)
    {
        if (vs[i]) continue;
        vector<int> d;
        for (int j=0; j<n; j++) if (p[i][j]==1) vs[j]=1, d.push_back(j);
        for (auto u:d) for (auto v:d) if (p[u][v]!=1) return 0;
        h.push_back(i);
        c[i]=d;
        int sz=d.size();
        for (int j=0; j<sz-1; j++) answer[d[j]][d[j+1]]=answer[d[j+1]][d[j]]=1;
    }
    for (int i=0; i<n; i++) vs[i]=0;
    for (int i=0; i<h.size(); i++)
    {
        if (vs[h[i]]) continue;
        vector<int> d;
        for (auto j:h) if (p[i][j]) d.push_back(j), vs[j]=1;
        for (auto u:d)
        {
            for (auto x:c[u]) l[cnt].push_back(x);
            for (auto v:d)
            {
                if (v==u) continue;
                for (auto x:c[u]) for (auto y:c[v]) if (p[x][y]!=2) return 0;
            }
        }
        cnt++;
        if (d.size()==2) return 0;
        if (d.size()==1) continue;
        int sz=d.size();
        for (int j=0; j<sz-1; j++) answer[d[j]][d[j+1]]=answer[d[j+1]][d[j]]=1;
        answer[d[0]][d[sz-1]]=answer[d[sz-1]][d[0]]=1;
    }
    //cout<<cnt<<'\n';
    for (int i=0; i<cnt; i++)
    {
        for (int j=i+1; j<cnt; j++)
        {
            for (auto x:l[i]) for (auto y:l[j]) if (p[x][y]!=0) return 0;
        }
    }
	build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:27:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for (int i=0; i<h.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 6 ms 1372 KB Output is correct
7 Correct 152 ms 22088 KB Output is correct

Subtask #2
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 6 ms 1372 KB Output is correct
7 Correct 152 ms 22088 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 600 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 156 ms 22072 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 65 ms 12092 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Incorrect 16 ms 3256 KB Answer gives possible 0 while actual possible 1
21 Halted 0 ms 0 KB -

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 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 0 ms 544 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 7 ms 1368 KB Output is correct
9 Correct 167 ms 22044 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 158 ms 22092 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 69 ms 12344 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 39 ms 5892 KB Output is correct
22 Correct 156 ms 22100 KB Output is correct
23 Correct 154 ms 22132 KB Output is correct
24 Correct 158 ms 22096 KB Output is correct
25 Correct 64 ms 12336 KB Output is correct
26 Correct 65 ms 12112 KB Output is correct
27 Correct 156 ms 22068 KB Output is correct
28 Correct 162 ms 22356 KB Output is correct
29 Correct 64 ms 12344 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 16 ms 3284 KB Answer gives possible 0 while actual possible 1
5 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 6 ms 1372 KB Output is correct
7 Correct 152 ms 22088 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 600 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 156 ms 22072 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 65 ms 12092 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Incorrect 16 ms 3256 KB Answer gives possible 0 while actual possible 1
21 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 6 ms 1372 KB Output is correct
7 Correct 152 ms 22088 KB Output is correct
8 Correct 0 ms 344 KB Output is correct
9 Correct 0 ms 600 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 7 ms 1372 KB Output is correct
13 Correct 156 ms 22072 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 65 ms 12092 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Incorrect 16 ms 3256 KB Answer gives possible 0 while actual possible 1
21 Halted 0 ms 0 KB -