Submission #769085

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
769085	2023-06-29T07:18:05 Z	t6twotwo	Connecting Supertrees (IOI20_supertrees)	C++17	0 / 100	1 ms	212 KB

supertrees

#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
int construct(std::vector<std::vector<int>> a) {
    int N = a.size();
    vector<vector<int>> s(N);
    vector<bool> vis(N);
    for (int i = 0; i < N; i++) {
        if (vis[i]) {
            continue;
        }
        vis[i] = 1;
        queue<int> q;
        q.push(i);
        while (!q.empty()) {
            int x = q.front();
            q.pop();
            s[i].push_back(x);
            for (int y = 0; y < N; y++) {
                if (!vis[y] && a[x][y]) {
                    vis[y] = 1;
                    q.push(y);
                }
            }
        }
    }
    vector ans(N, vector<int>(N));
    for (auto &v : s) {
        for (int i = 0; i < v.size(); i++) {
            for (int j = i + 1; j < v.size(); j++) {
                if (!a[v[i]][v[j]]) {
                    return 0;
                }
            }
        }
        for (int i = 0; i < v.size(); i++) {
            int x = v[i];
            int y = v[i + 1 == v.size() ? 0 : i + 1];
            a[x][y] = a[y][x] = 1;
        }
    }
    build(ans);
    return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:29:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |         for (int i = 0; i < v.size(); i++) {
      |                         ~~^~~~~~~~~~
supertrees.cpp:30:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |             for (int j = i + 1; j < v.size(); j++) {
      |                                 ~~^~~~~~~~~~
supertrees.cpp:36:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |         for (int i = 0; i < v.size(); i++) {
      |                         ~~^~~~~~~~~~
supertrees.cpp:38:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |             int y = v[i + 1 == v.size() ? 0 : i + 1];
      |                       ~~~~~~^~~~~~~~~~~

Subtask #1
0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Incorrect	1 ms	212 KB	Too few ways to get from 0 to 1, should be 1 found 0
3	Halted	0 ms	0 KB	-

Subtask #2
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Incorrect	1 ms	212 KB	Too few ways to get from 0 to 1, should be 1 found 0
3	Halted	0 ms	0 KB	-

Subtask #3
0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 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	-