Submission #306149

#TimeUsernameProblemLanguageResultExecution timeMemory
306149SorahISAStations (IOI20_stations)C++17
10 / 100
888 ms1048 KiB
#include "stations.h" #include <bits/stdc++.h> using namespace std; using pii = pair<int, int>; template<typename T> using Prior = priority_queue<T>; template<typename T> using prior = priority_queue<T, vector<T>, greater<T>>; #define X first #define Y second #define ALL(x) (x).begin(), (x).end() #define eb emplace_back #define pb push_back const int maxn = 1000 + 5; vector<int> adj[maxn], lab, sz; int tok = 0; void dfs(int now, int lst) { lab[now] = tok++, sz[now] = 1; for (auto x : adj[now]) { if (x != lst) dfs(x, now), sz[now] += sz[x]; } } vector<int> label(int n, int k, vector<int> u, vector<int> v) { for (int i = 0; i < maxn; ++i) adj[i].clear(); lab.resize(n), sz.resize(n); tok = 0; for (int i = 0; i < n-1; ++i) { adj[u[i]].eb(v[i]), adj[v[i]].eb(u[i]); } dfs(0, -1); for (int i = 0; i < n; ++i) lab[i] = lab[i] * 1000 + sz[i]; // cout << "lab : "; // for (int i = 0; i < n; ++i) cout << lab[i] << " \n"[i == n-1]; return lab; } int find_next_station(int s, int t, vector<int> c) { sort(ALL(c), [](auto a, auto b) {return a/1000 < b/1000;}); // cout << "c : "; for (auto x : c) cout << x << " "; cout << "\n"; if (s/1000 > t/1000 or s/1000 + s%1000 <= t/1000) return c[0]; for (int i = 1; i < c.size(); ++i) { if (c[i]/1000 > t/1000) return c[i - 1]; } return c.back(); }

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:51:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |     for (int i = 1; i < c.size(); ++i) {
      |                     ~~^~~~~~~~~~
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