Submission #462525

#	Time	Username	Problem	Language	Result	Execution time	Memory
462525		wind_reaper	Stations (IOI20_stations)	C++17	0 / 100	3048 ms	2097156 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>

using namespace std;

vector<int> g[1000], tin;
int timer;

void dfs(int u, int p, int d){
	if(!d) tin[u] = timer++;
	for(int v : g[u]) if(v != p){
		dfs(v, u, d ^ 1);
	}
	if(d) tin[u] = timer++;
}

vector<int> label(int n, int k, vector<int> u, vector<int> v){
	for(int i = 0; i < n - 1; i++){
		g[u[i]].push_back(v[i]);
		g[v[i]].push_back(u[i]);
	}
	tin.resize(n);

	dfs(0, 0, 0);

	return tin;
}

int find_next_station(int s, int t, vector<int> c){
	int m = c.size(), i;
	if(s < c[0]){
		for(i = 0; i < m - 1; i++)
			if(i == 0 ? s : c[i-1] < t && c[i] >= t)
				break;
	}
	else{
		for(i = m - 1; i > 0; --i)
			if(i + 1 == m ? s : c[i+1] > t && c[i] <= t)
				break;
	}

	return c[i];
}

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