oj.uz

Submission #791179

# Submission time Handle Problem Language Result Execution time Memory
791179 2023-07-23T13:54:15 Z Pablo_No Stations (IOI20_stations) C++17
8 / 100
 720 ms 552 KB 
#include "stations.h"
#include <algorithm>
#include <vector>

using namespace std;

vector<int> col;
vector<vector<int>> g;

int dfsfd(int v, int p, int d)
{
	if(g[v].size() == d)
	{
		return v;
	}

	for(int u : g[v]) if(u != p)
	{
		int x = dfsfd(u, v, d);
		if(x != -1)
		{
			return x;
		}
	}

	return -1;
}

void dfs(int v, int p, int d)
{
	col[v] = d-1;
	int ns = 0;
	for(int u : g[v]) if(u != p)
	{
		dfs(u, v, 2*d+ns);
		ns++;
	}
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v)
{
	g.assign(n, vector<int>(0));
	col.resize(n);
	for(int i = 0; i < n-1; i++)
	{
		g[u[i]].push_back(v[i]);
		g[v[i]].push_back(u[i]);
	}
	if(dfsfd(1, -1, 2) != -1)
		dfs(dfsfd(1, -1, 2), -1, 1);
	else
		dfs(dfsfd(1, -1, 1), -1, 1);

	return col;
}

int find_next_station(int s, int t, std::vector<int> c) {
	sort(c.begin(), c.end());
	int ts = s+1;
	int tt = t+1;
	int t1 = 2*ts;
	int t2 = 2*ts+1;
	while(tt && tt != t1 && tt != t2)
	{
		tt /= 2;
	}
	if(tt == t1)
		return t1-1;
	if(tt == t2)
		return t2-1;
	return ts/2-1;
}

Compilation message

stations.cpp: In function 'int dfsfd(int, int, int)':
stations.cpp:12:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   12 |  if(g[v].size() == d)
      |     ~~~~~~~~~~~~^~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 416 KB Invalid labels (values out of range). scenario=2, k=1000, vertex=2, label=-1
2 Halted 0 ms 0 KB -

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 347 ms 552 KB Output is correct
2 Correct 397 ms 544 KB Output is correct
3 Correct 672 ms 492 KB Output is correct
4 Correct 540 ms 416 KB Output is correct
5 Correct 410 ms 492 KB Output is correct
6 Correct 309 ms 488 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 464 KB Invalid labels (values out of range). scenario=1, k=1000000, vertex=0, label=-1
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 628 ms 492 KB Output is correct
2 Correct 519 ms 420 KB Output is correct
3 Correct 574 ms 492 KB Output is correct
4 Correct 1 ms 496 KB Output is correct
5 Correct 3 ms 492 KB Output is correct
6 Correct 0 ms 492 KB Output is correct
7 Correct 464 ms 416 KB Output is correct
8 Correct 720 ms 416 KB Output is correct
9 Correct 469 ms 420 KB Output is correct
10 Correct 465 ms 492 KB Output is correct
11 Incorrect 4 ms 492 KB Wrong query response.
12 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 464 KB Invalid labels (values out of range). scenario=1, k=1000000000, vertex=0, label=-1
2 Halted 0 ms 0 KB -