oj.uz

Submission #1084737

# Submission time Handle Problem Language Result Execution time Memory
1084737 2024-09-06T20:46:49 Z an22inkle Connecting Supertrees (IOI20_supertrees) C++17
0 / 100
 1 ms 440 KB 
#include<bits/stdc++.h>
#include "supertrees.h"
using pair = std::array<int, 2>;
using ll = long long;

int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	std::vector<std::vector<int>> ans(n, std::vector<int>(n)), lines;
	std::vector<int> part(n, -1);

	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			if (i == j) continue;
			if (p[i][j] == 0) continue;
			if (part[i] > -1) lines[part[i]].push_back(j), part[j] = part[i];
			else if (part[j] > -1) lines[part[j]].push_back(i), part[i] = part[j];
			else {
				lines.push_back({});
				lines.back().push_back(i);
				lines.back().push_back(j);
				part[i] = part[j] = lines.size() - 1;
			}
		}
	}
	for (auto line : lines) {
		for (int i = 0; i < line.size(); i++) {
			for (int j = i+1; j < line.size(); j++) {
				if (p[line[i]][line[j]] == 0) return 0;
			}

			if (i != line.size() - 1) ans[line[i]][line[i+1]] = 1;
		} 
	}

	build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:26:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |   for (int i = 0; i < line.size(); i++) {
      |                   ~~^~~~~~~~~~~~~
supertrees.cpp:27:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |    for (int j = i+1; j < line.size(); j++) {
      |                      ~~^~~~~~~~~~~~~
supertrees.cpp:31:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |    if (i != line.size() - 1) ans[line[i]][line[i+1]] = 1;
      |        ~~^~~~~~~~~~~~~~~~~~

Subtask #1
0 / 11.0

# 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 Incorrect 0 ms 348 KB b is not symmetric: b[0][1] (1) != b[1][0] (0)
4 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 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 Incorrect 0 ms 348 KB b is not symmetric: b[0][1] (1) != b[1][0] (0)
4 Halted 0 ms 0 KB -

Subtask #3
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 1 ms 348 KB Output is correct
4 Incorrect 0 ms 348 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 440 KB Output is correct
2 Incorrect 1 ms 348 KB b is not symmetric: b[0][1] (1) != b[1][0] (0)
3 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# 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 Incorrect 0 ms 348 KB b is not symmetric: b[0][1] (1) != b[1][0] (0)
4 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# 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 Incorrect 0 ms 348 KB b is not symmetric: b[0][1] (1) != b[1][0] (0)
4 Halted 0 ms 0 KB -