Submission #311948

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
311948	2020-10-12 03:45:38	Eric_hoo	Stations (IOI20_stations)	C++14	100 / 100	1041 ms	1160 KiB

stations

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#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
vector <int> id; int TOT;
vector <int> from[1010];
void dfs(int x, int last, int dep) {
  if (dep & 1) {
    id[x] = TOT++;
    for (int i = 0; i < from[x].size(); i++) {
      int v = from[x][i];
      if (v == last) continue;
      dfs(v, x, dep + 1);
    }
  } else {
    for (int i = 0; i < from[x].size(); i++) {
      int v = from[x][i];
      if (v == last) continue;
      dfs(v, x, dep + 1);
    }
    id[x] = TOT++;
  }
}
vector <int> label(int n, int k, vector <int> X, vector <int> Y) {
  for (int i = 0; i < n; i++) {
    from[i].clear();
  }
 
 
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Compilation message (stderr)

stations.cpp: In function 'void dfs(int, int, int)':
stations.cpp:12:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |   for (int i = 0; i < from[x].size(); i++) {
      |                   ~~^~~~~~~~~~~~~~~~
stations.cpp:18:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |   for (int i = 0; i < from[x].size(); i++) {
      |                   ~~^~~~~~~~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:42:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |   for (int i = 0; i + 1 < c.size(); i++) {
      |                   ~~~~~~^~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 8 / 8
• Subtask 3: 16 / 16
• Subtask 4: 10 / 10
• Subtask 5: 61 / 61