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Submission #1080035

# Submission time Handle Problem Language Result Execution time Memory
1080035 2024-08-29T06:28:15 Z KaleemRazaSyed Stations (IOI20_stations) C++17
10 / 100
 658 ms 936 KB 
#include<bits/stdc++.h>
#include "stations.h"

using namespace std;

const int N = 2005;
vector<int> G[N];
int in[N], out[N];
int emit = 0;

void add_edge(int x, int y)
{
  G[x].push_back(y);
  G[y].push_back(x);
}

void dfs(int v, int p = -1)
{
  // cerr << v << endl;
  in[v] = emit++;
  for(int u : G[v])
    if(u != p)
      dfs(u, v);
  out[v] = emit++;
}

vector<int> label(int n, int k, vector<int> u, vector<int> v)
{
  for(int i = 0; i < n; i ++)
    G[i].clear();
  
  for(int i = 0; i < u.size(); i ++)
    add_edge(u[i], v[i]);

  dfs(0);
  
  vector<int> l(n);
  for(int i = 0; i < n; i ++)
    l[i] = in[i] * N + out[i];
  return l;
}

int find_next_station(int s, int t, vector<int> c)
{
  int ins = s / N, outs = s % N;
  int in_t = t / N, outt = t % N;
  
  int p = -1;
  for(int i : c)
    {
      
      int ini = i / N, outi = i % N;
      if(ini <= ins && outs <= outi)
	{
	  p = i;
	  continue;
	}
      
      if(ini <= in_t && outt <= outi)
	return i;
    }
  return p;
}

Compilation message

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:32:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |   for(int i = 0; i < u.size(); i ++)
      |                  ~~^~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 596 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=1, label=14049
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=0, label=1991
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 600 KB Invalid labels (values out of range). scenario=1, k=1000000, vertex=3, label=1168063
2 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 658 ms 684 KB Output is correct
2 Correct 406 ms 684 KB Output is correct
3 Correct 382 ms 684 KB Output is correct
4 Correct 1 ms 764 KB Output is correct
5 Correct 3 ms 768 KB Output is correct
6 Correct 0 ms 772 KB Output is correct
7 Correct 441 ms 684 KB Output is correct
8 Correct 586 ms 688 KB Output is correct
9 Correct 498 ms 684 KB Output is correct
10 Correct 412 ms 684 KB Output is correct
11 Correct 2 ms 776 KB Output is correct
12 Correct 4 ms 764 KB Output is correct
13 Correct 4 ms 768 KB Output is correct
14 Correct 1 ms 768 KB Output is correct
15 Correct 2 ms 768 KB Output is correct
16 Correct 315 ms 684 KB Output is correct
17 Correct 348 ms 684 KB Output is correct
18 Correct 384 ms 684 KB Output is correct
19 Correct 340 ms 684 KB Output is correct
20 Correct 328 ms 684 KB Output is correct

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Incorrect 379 ms 936 KB Wrong query response.
2 Halted 0 ms 0 KB -