Submission #719514

#	Time	Username	Problem	Language	Result	Execution time	Memory
719514		mseebacher	Stations (IOI20_stations)	C++17	10 / 100	852 ms	600 KiB

stations

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

using namespace std;

#define MAXI (int)1e3+10

vector<int> ad[MAXI];
vector<int> labels;


// 1 .. 1e3
// 1e3+1 ... 2e3
void dfs(int x,int e){
	int cnt = 1;
	for(auto s: ad[x]){
		if(s == e) continue;
		labels[s] = labels[x]*8+cnt-1;
		cnt++;
		dfs(s,x);
	}
}


vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	labels.assign(n,0);
	for(int i = 0;i<MAXI;i++) ad[i].clear();
	
	for(int i = 0;i<n-1;i++){
		ad[u[i]].push_back(v[i]);
		ad[v[i]].push_back(u[i]);
	}

	labels[0] = 1;
	dfs(0,-1);
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	if(c.size() == 1) return c[0];
	while(t > s){
		for(int i = 0;i<(int) c.size();i++){
			if(t == c[i]) return c[i];
		}
		t >>= (3);
	}
	return c[0];
}

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