Submission #828792

#TimeUsernameProblemLanguageResultExecution timeMemory
828792Minindu206Stations (IOI20_stations)C++14
0 / 100
3064 ms2097152 KiB
#include "stations.h" #include <bits/stdc++.h> using namespace std; vector<int> adj[1005], vals; int t = 0; void dfs(int node, int p) { for (auto a : adj[node]) { if (a != p) dfs(a, node); } vals[node] = t++; } vector<int> label(int n, int k, vector<int> u, vector<int> v) { for (int i = 0; i < n - 1; i++) { adj[u[i]].push_back(v[i]); adj[v[i]].push_back(u[i]); } vals.resize(n); dfs(0, -1); // for (int i = 0; i < n; i++) // cout << vals[i] << "\n"; // cout << '\n'; return vals; } int find_next_station(int s, int t, vector<int> c) { if (c.size() == 1) return c[0]; if (s < c[0]) { if (s < t && t <= c[0]) return c[0]; for (int i = 1; i < c.size() - 1; i++) { if (c[i - 1] < t && t <= c[i]) return c[i]; } return c.back(); } if (c.back() <= t && t < s) return c.back(); for (int i = c.size() - 2; i; i--) { if (c[i] <= t && t < c[i + 1]) return c[i]; } return c[0]; }

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:39:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |   for (int i = 1; i < c.size() - 1; i++)
      |                   ~~^~~~~~~~~~~~~~
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