Submission #591991

#TimeUsernameProblemLanguageResultExecution timeMemory
591991Morisz10Stations (IOI20_stations)C++14
0 / 100
5 ms804 KiB
#include "stations.h" #include <vector> #include <algorithm> #include <iostream> using namespace std; const int maxn = 1000; vector<int> g[maxn]; int l; vector<int> L, max_L, r_label; int dfs(int x, int p) { max_L[x] = L[x] = l++; r_label[L[x]] = x; for (int i : g[x]) { if (i != p)max_L[x] = dfs(i, x); } return max_L[x]; } vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) { L.assign(n, 0); for (int i = 0; i < n; i++)g[i] = {}; max_L = L; r_label = L; for (int i = 0; i < u.size(); i++) { g[u[i]].push_back(v[i]); g[v[i]].push_back(u[i]); } l = 0; dfs(0, -1); return L; } int find_next_station(int s, int t, std::vector<int> c) { for (int i = 0; i < c.size() - 1; i++) { if (t < c[i + 1])return c[i]; } return t > max_L[r_label[c.back()]] ? c[0] : c.back(); }

Compilation message (stderr)

stations.cpp: In function 'std::vector<int> label(int, int, std::vector<int>, std::vector<int>)':
stations.cpp:25:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for (int i = 0; i < u.size(); i++) {
      |                  ~~^~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:35:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |  for (int i = 0; i < c.size() - 1; i++) {
      |                  ~~^~~~~~~~~~~~~~
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