oj.uz

Submission #822997

# Submission time Handle Problem Language Result Execution time Memory
822997 2023-08-12T06:48:01 Z fatemetmhr Connecting Supertrees (IOI20_supertrees) C++17
46 / 100
 177 ms 26040 KB 
// :)

#include "supertrees.h"
#include <bits/stdc++.h>

using namespace std;

#define all(x) x.begin(), x.end()
#define fi     first
#define se     second
#define mp     make_pair
#define pb     push_back

typedef long long ll;


const int maxn5 = 1e3 + 10;

vector<vector<int>> ret;
vector <int> tp, av, ver;
bool mark[maxn5], mark2[maxn5];
int n, a[maxn5][maxn5];

void dfs0(int v){
	mark[v] = true;
	ver.pb(v);
	for(int i = 0; i < n; i++) if(a[v][i] > 0 && !mark[i])
		dfs0(i);
}

void dfs1(int v){
	mark2[v] = true;
	av.pb(v);
	for(int i = 0; i < n; i++) if(a[v][i] == 1 && !mark2[i]){
		ret[v][i] = ret[i][v] = 1;
		dfs1(i);
		return;
	}
}

int construct(std::vector<std::vector<int>> p) {
	n = p.size();
	for (int i = 0; i < n; i++){
		vector<int> row;
		row.resize(n);
		fill(all(row), 0);
		ret.push_back(row);
		for(int j = 0; j < n; j++)
			a[i][j] = p[i][j];
	}
	for(int i = 0; i < n; i++) if(!mark[i]){
		ver.clear();
		for(int j = 0; j < ver.size(); j++) for(int k = 0; k < ver.size(); k++)
			if(a[ver[j]][ver[k]] == 0)
				return 0;
		tp.clear();
		dfs0(i);
		for(auto u : ver) if(!mark2[u]){
			av.clear();
			dfs1(u);
			for(int i = 0; i < av.size(); i++) for(int j = 0; j < av.size(); j++)
				if(a[av[i]][av[j]] != 1)
					return 0;
			tp.pb(u);
		}
		for(int i = 1; i < int(tp.size()); i++)
			ret[tp[i]][tp[i - 1]] = ret[tp[i - 1]][tp[i]] = 1;
		if(tp.size() > 1)
			ret[tp.back()][tp[0]] = ret[tp[0]][tp.back()] = 1;
	}
	build(ret);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:53:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |   for(int j = 0; j < ver.size(); j++) for(int k = 0; k < ver.size(); k++)
      |                  ~~^~~~~~~~~~~~
supertrees.cpp:53:56: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |   for(int j = 0; j < ver.size(); j++) for(int k = 0; k < ver.size(); k++)
      |                                                      ~~^~~~~~~~~~~~
supertrees.cpp:61:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |    for(int i = 0; i < av.size(); i++) for(int j = 0; j < av.size(); j++)
      |                   ~~^~~~~~~~~~~
supertrees.cpp:61:56: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |    for(int i = 0; i < av.size(); i++) for(int j = 0; j < av.size(); j++)
      |                                                      ~~^~~~~~~~~~~

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 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 11 ms 2004 KB Output is correct
7 Correct 163 ms 26028 KB Output is correct

Subtask #2
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 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 11 ms 2004 KB Output is correct
7 Correct 163 ms 26028 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 0 ms 340 KB Output is correct
12 Correct 7 ms 1876 KB Output is correct
13 Correct 158 ms 26008 KB Output is correct
14 Incorrect 0 ms 212 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 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 Incorrect 1 ms 212 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
35.0 / 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 212 KB Output is correct
4 Correct 41 ms 7680 KB Output is correct
5 Correct 164 ms 25908 KB Output is correct
6 Correct 160 ms 25988 KB Output is correct
7 Correct 164 ms 26040 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 41 ms 7648 KB Output is correct
10 Correct 177 ms 26020 KB Output is correct
11 Correct 159 ms 25972 KB Output is correct
12 Correct 162 ms 25932 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 46 ms 7692 KB Output is correct
17 Correct 163 ms 25924 KB Output is correct
18 Correct 158 ms 26008 KB Output is correct
19 Correct 158 ms 26000 KB Output is correct
20 Correct 159 ms 26000 KB Output is correct

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 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 11 ms 2004 KB Output is correct
7 Correct 163 ms 26028 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 0 ms 340 KB Output is correct
12 Correct 7 ms 1876 KB Output is correct
13 Correct 158 ms 26008 KB Output is correct
14 Incorrect 0 ms 212 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 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 11 ms 2004 KB Output is correct
7 Correct 163 ms 26028 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 0 ms 340 KB Output is correct
12 Correct 7 ms 1876 KB Output is correct
13 Correct 158 ms 26008 KB Output is correct
14 Incorrect 0 ms 212 KB Answer gives possible 1 while actual possible 0
15 Halted 0 ms 0 KB -