Submission #828058

#	Time	Username	Problem	Language	Result	Execution time	Memory
828058		minhcool	Stations (IOI20_stations)	C++17	0 / 100	729 ms	28068 KiB

stations

#include "stations.h"
#include<bits/stdc++.h>
using namespace std;
#include <vector>

#define pb push_back

const int N = 5e5 + 5;

int n;
vector<int> Adj[N];

int l[N], r[N];

vector<int> vis;

void dfs(int u, int p){
	l[u] = vis.size();
	vis.pb(u);
	for(auto v : Adj[u]){
		if(v == p) continue;
		dfs(v, u);
	}
	r[u] = vis.size();
}

//vector<int> vis;

int tol[1005][1005];

void prep(){
	int cnt = 0;
	for(int i = 0; i < n; i++){
		for(int j = i + 1; j < n; j++){
			tol[i][j] = cnt;
			cnt++;
		}
	}
}

vector<int> label(int n_, int k, vector<int> u, vector<int> v) {
	prep();
	n = n_;
	vis.clear();
	for(int i = 0; i < n; i++) Adj[i].clear();
	for(int i = 0; i < (n - 1); i++){
		Adj[u[i]].pb(v[i]); Adj[v[i]].pb(u[i]);
	}
	dfs(0, 0);
	vector<int> labels(n);
	for(int i = 0; i < n; i++){
		labels[vis[i]] = i;
	}
	return labels;
	/*
	std::vector<int> labels(n);
	for (int i = 0; i < n; i++) {
		labels[i] = i;
	}
	return labels;*/
}

int find_next_station(int s, int t, std::vector<int> c) {
	if(s < t) return s + 1;
	else return s - 1;
	//return c[0];
}

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