Submission #653247

#	Time	Username	Problem	Language	Result	Execution time	Memory
653247		mychecksedad	Stations (IOI20_stations)	C++17	0 / 100	894 ms	464 KiB

stations

#include <bits/stdc++.h>
using namespace std;
#define pb push_back


vector<int> label(int n, int k, vector<int> u, vector<int> v){
	int timer = 0, tin[n], tout[n], dep[n];
	vector<vector<int>> g(n);
	for(int i = 0; i < n-1; ++i) g[u[i]].pb(v[i]), g[v[i]].pb(u[i]);
	function<void(int, int)> dfs = [&](int v, int p){
		tin[v] = ++timer;
		dep[v] = dep[p] + 1;
		for(int u: g[v]){
			if(u != p) dfs(u, v);
		}
		tout[v] = timer;
	};
	dep[0] = 0;
	dfs(0, 0);
	vector<int> l;
	for(int i = 0; i < n; ++i) l.pb(dep[i]%2 ? tin[i] : tout[i]);
	return l;
}
int find_next_station(int s, int t, vector<int> c){
	for(int p: c){
		if(p==t) return t;
	}
	int par = c.back();
	if(t <= s || t >= par)
		return par;
	for(int i = 0; i < c.size() - 1; ++i){
		if(c[i] >= t){
			return c[i];
		}
	}

	return par;
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:31:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |  for(int i = 0; i < c.size() - 1; ++i){
      |                 ~~^~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 8
• Subtask 3: 0 / 16
• Subtask 4: 0 / 10
• Subtask 5: 0 / 61