Submission #428484

#	Time	Username	Problem	Language	Result	Execution time	Memory
428484		egekabas	Stations (IOI20_stations)	C++14	0 / 100	1059 ms	672 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
#define all(x) (x).begin(), (x).end()
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<ull, ull> pull;
typedef pair<int, int> pii;
typedef pair<ld, ld> pld;
vector<int> g[1009];
vector<int> ans;
int curt = 0;
void dfs(int v, int prt, int depth){
	int tl = curt;
	++curt;
	for(auto u : g[v])
		if(u != prt)
			dfs(u, v, depth+1);
	int tr = curt;
	++curt;
	if(depth%2 == 0)
		ans[v] = tl;
	else
		ans[v] = tr;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	ans = vector<int>(n);
	for(int i = 0; i < n; ++i)
		g[i].clear();
	for(int i = 0; i < n-1; ++i){
		g[u[i]].pb(v[i]);
		g[v[i]].pb(u[i]);
	}
	curt = 0;
	dfs(0, -1, 0);
	return ans;
}

int find_next_station(int s, int t, std::vector<int> c) {
	int smaller = 0;
	for(auto u : c)
		if(u < s)
			smaller = 1;
	if(smaller == 0){
		sort(all(c));
		for(auto u : c)
			if(t <= u)
				return u;
	}
	else{
		sort(all(c), greater<int>());
		for(auto u : c)
			if(t >= u)
				return u;
	}
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:62:1: warning: control reaches end of non-void function [-Wreturn-type]
   62 | }
      | ^

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