oj.uz

Submission #308676

# Submission time Handle Problem Language Result Execution time Memory
308676 2020-10-01T16:55:11 Z kris01 Stations (IOI20_stations) C++14
0 / 100
 1015 ms 1024 KB 
#include "stations.h"
#include <bits/stdc++.h>
#include <vector>
int timer = 0;
using namespace std;

vector < vector <int> > Adj;
vector <int> tin,tout,depth;

void PREP(int n) {
    Adj.clear();
    tin.clear();
    tout.clear();
    depth.clear();
    Adj.resize(n);
    tin.resize(n);
    tout.resize(n);
    depth.resize(n);
    depth[1] = 0;
    timer = 1;
}

void DFS(int v,int p) {
    tin[v] = timer;
    timer++;
    for (int x : Adj[v]) {
     if (x == p) continue;
     DFS(x,v);
     depth[x] = depth[v] + 1;
    }
    tout[v] = timer;
    timer++;
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
    vector <int> labels(n);
    vector < pair <int,int> > LBLS;
    PREP(n);
	for (int i = 0;i < n-1;i++) {
        int a = u[i];
        int b = v[i];
        Adj[a].push_back(b);
        Adj[b].push_back(a);
	}
	DFS(1,-1);
	for (int i = 0;i < n;i++) {
       if (depth[i] % 2 == 0) {
        LBLS.push_back(make_pair(tin[i],i));
       } else {
        LBLS.push_back(make_pair(tout[i],i));
        }
    }
    sort(LBLS.begin(),LBLS.end());
    for (int i = 0;i < n;i++) {
        labels[LBLS[i].second] = i;
    }
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
  if (c.back() < s) {
        c.push_back(s);
        sort(c.begin(),c.end());
      for (int i = 1;i < c.size()-1;i++) {
        if (c[i] <= t && c[i+1] > t) {
            return c[i];
        }
      }
      return c[0];
  } else {
        c.push_back(s);
        sort(c.begin(),c.end());
      for (int i = 0;i < c.size()-1;i++) {
        if (c[i] >= t && c[i+1] < t) {
            return c[i];
        }
      }
      return c.back();
  }
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:64:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |       for (int i = 1;i < c.size()-1;i++) {
      |                      ~~^~~~~~~~~~~~
stations.cpp:73:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |       for (int i = 0;i < c.size()-1;i++) {
      |                      ~~^~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 542 ms 1024 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 579 ms 792 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 741 ms 1024 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1015 ms 640 KB Output is correct
2 Incorrect 878 ms 644 KB Wrong query response.
3 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Incorrect 492 ms 1024 KB Wrong query response.
2 Halted 0 ms 0 KB -