oj.uz

Submission #838621

# Submission time Handle Problem Language Result Execution time Memory
838621 2023-08-27T13:12:37 Z prvocislo Simurgh (IOI17_simurgh) C++17
30 / 100
 3000 ms 6512 KB 
#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <cmath>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <string>
#include <vector>
#include "simurgh.h"
typedef long long ll;
typedef long double ld;
using namespace std;

int n;
vector<int> u, v;

vector<int> p;
void clean() { p.assign(n, -1); for (int i = 0; i < n; i++) p[i] = i; }
int root(int i) { return p[i] == i ? i : p[i] = root(p[i]); }
bool merge(int k)
{
	int i = u[k], j = v[k];
	i = root(i), j = root(j);
	if (i == j) return false;
	p[i] = j;
	return true;
}

int count_common_roads(const vector<int>& r); 

vector<int> find_roads(int N, vector<int> U, vector<int> V)
{
	n = N, u = U, v = V;
	int m = u.size();
	set<int> g, r;
	for (int i = 0; i < m; i++) r.insert(i);
	while (!r.empty())
	{
		clean();
		vector<int> e;
		for (int i : g) merge(i), e.push_back(i);
		for (int i : r) if (merge(i)) e.push_back(i);
		for (int i : e) r.erase(i);
		if (r.empty())
		{
			sort(e.begin(), e.end());
			return e;
		}
		e.push_back(*r.begin());
		r.erase(r.begin());
		vector<pair<int, int> > c; // pre tie na cykle - { pocet zlatych ciest, ktory sme dali prec }
		for (int i : e) if (!g.count(i))
		{
			clean();
			vector<int> e2;
			for (int j : e) if (i != j)
			{
				if (!merge(j)) break;
				e2.push_back(j);
			}
			if (e2.size() < n - 1) r.insert(i);
			else c.push_back({ count_common_roads(e2), i });
		}
		int mx = max_element(c.begin(), c.end())->first;
		for (pair<int, int> p : c) if (p.first == mx - 1)
		{
			g.insert(p.second);
		}
	}
	return vector<int>(g.begin(), g.end());
}

Compilation message

simurgh.cpp: In function 'std::vector<int> find_roads(int, std::vector<int>, std::vector<int>)':
simurgh.cpp:67:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   67 |    if (e2.size() < n - 1) r.insert(i);
      |        ~~~~~~~~~~^~~~~~~

Subtask #1
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB correct
2 Correct 0 ms 212 KB correct
3 Correct 0 ms 212 KB correct
4 Correct 0 ms 212 KB correct
5 Correct 1 ms 212 KB correct
6 Correct 0 ms 212 KB correct
7 Correct 0 ms 212 KB correct
8 Correct 0 ms 212 KB correct
9 Correct 0 ms 212 KB correct
10 Correct 0 ms 212 KB correct
11 Correct 0 ms 212 KB correct
12 Correct 0 ms 300 KB correct
13 Correct 1 ms 212 KB correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB correct
2 Correct 0 ms 212 KB correct
3 Correct 0 ms 212 KB correct
4 Correct 0 ms 212 KB correct
5 Correct 1 ms 212 KB correct
6 Correct 0 ms 212 KB correct
7 Correct 0 ms 212 KB correct
8 Correct 0 ms 212 KB correct
9 Correct 0 ms 212 KB correct
10 Correct 0 ms 212 KB correct
11 Correct 0 ms 212 KB correct
12 Correct 0 ms 300 KB correct
13 Correct 1 ms 212 KB correct
14 Correct 12 ms 340 KB correct
15 Correct 14 ms 392 KB correct
16 Correct 14 ms 340 KB correct
17 Correct 7 ms 340 KB correct
18 Correct 3 ms 296 KB correct
19 Correct 8 ms 340 KB correct
20 Correct 9 ms 372 KB correct
21 Correct 8 ms 368 KB correct
22 Correct 6 ms 304 KB correct
23 Correct 5 ms 296 KB correct
24 Correct 5 ms 340 KB correct
25 Correct 2 ms 280 KB correct
26 Correct 5 ms 340 KB correct
27 Correct 5 ms 340 KB correct
28 Correct 3 ms 212 KB correct
29 Correct 2 ms 212 KB correct
30 Correct 4 ms 296 KB correct
31 Correct 5 ms 296 KB correct
32 Correct 5 ms 348 KB correct
33 Correct 4 ms 300 KB correct

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB correct
2 Correct 0 ms 212 KB correct
3 Correct 0 ms 212 KB correct
4 Correct 0 ms 212 KB correct
5 Correct 1 ms 212 KB correct
6 Correct 0 ms 212 KB correct
7 Correct 0 ms 212 KB correct
8 Correct 0 ms 212 KB correct
9 Correct 0 ms 212 KB correct
10 Correct 0 ms 212 KB correct
11 Correct 0 ms 212 KB correct
12 Correct 0 ms 300 KB correct
13 Correct 1 ms 212 KB correct
14 Correct 12 ms 340 KB correct
15 Correct 14 ms 392 KB correct
16 Correct 14 ms 340 KB correct
17 Correct 7 ms 340 KB correct
18 Correct 3 ms 296 KB correct
19 Correct 8 ms 340 KB correct
20 Correct 9 ms 372 KB correct
21 Correct 8 ms 368 KB correct
22 Correct 6 ms 304 KB correct
23 Correct 5 ms 296 KB correct
24 Correct 5 ms 340 KB correct
25 Correct 2 ms 280 KB correct
26 Correct 5 ms 340 KB correct
27 Correct 5 ms 340 KB correct
28 Correct 3 ms 212 KB correct
29 Correct 2 ms 212 KB correct
30 Correct 4 ms 296 KB correct
31 Correct 5 ms 296 KB correct
32 Correct 5 ms 348 KB correct
33 Correct 4 ms 300 KB correct
34 Correct 2512 ms 2512 KB correct
35 Correct 2021 ms 2444 KB correct
36 Correct 1396 ms 1764 KB correct
37 Correct 67 ms 340 KB correct
38 Correct 1857 ms 2492 KB correct
39 Correct 2049 ms 2172 KB correct
40 Correct 1591 ms 1752 KB correct
41 Execution timed out 3075 ms 2516 KB Time limit exceeded
42 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB correct
2 Correct 1 ms 212 KB correct
3 Incorrect 2287 ms 6512 KB WA in grader: NO
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB correct
2 Correct 0 ms 212 KB correct
3 Correct 0 ms 212 KB correct
4 Correct 0 ms 212 KB correct
5 Correct 1 ms 212 KB correct
6 Correct 0 ms 212 KB correct
7 Correct 0 ms 212 KB correct
8 Correct 0 ms 212 KB correct
9 Correct 0 ms 212 KB correct
10 Correct 0 ms 212 KB correct
11 Correct 0 ms 212 KB correct
12 Correct 0 ms 300 KB correct
13 Correct 1 ms 212 KB correct
14 Correct 12 ms 340 KB correct
15 Correct 14 ms 392 KB correct
16 Correct 14 ms 340 KB correct
17 Correct 7 ms 340 KB correct
18 Correct 3 ms 296 KB correct
19 Correct 8 ms 340 KB correct
20 Correct 9 ms 372 KB correct
21 Correct 8 ms 368 KB correct
22 Correct 6 ms 304 KB correct
23 Correct 5 ms 296 KB correct
24 Correct 5 ms 340 KB correct
25 Correct 2 ms 280 KB correct
26 Correct 5 ms 340 KB correct
27 Correct 5 ms 340 KB correct
28 Correct 3 ms 212 KB correct
29 Correct 2 ms 212 KB correct
30 Correct 4 ms 296 KB correct
31 Correct 5 ms 296 KB correct
32 Correct 5 ms 348 KB correct
33 Correct 4 ms 300 KB correct
34 Correct 2512 ms 2512 KB correct
35 Correct 2021 ms 2444 KB correct
36 Correct 1396 ms 1764 KB correct
37 Correct 67 ms 340 KB correct
38 Correct 1857 ms 2492 KB correct
39 Correct 2049 ms 2172 KB correct
40 Correct 1591 ms 1752 KB correct
41 Execution timed out 3075 ms 2516 KB Time limit exceeded
42 Halted 0 ms 0 KB -