Submission #1076628

#	Time	Username	Problem	Language	Result	Execution time	Memory
1076628		mindiyak	Stations (IOI20_stations)	C++14	0 / 100	4 ms	596 KiB

stations

#include "stations.h"
#include <vector>
#include <queue>

using namespace std;

vector<vector<int>> paths(1001);
vector<int> dist(1001,-1);

void dfs(int pos,int len){
	if(dist[pos] != -1)return;
	dist[pos] = 0;
	for(int i:paths[pos])dfs(i,len+1);
}


std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	std::vector<int> labels(n);
	paths = vector<vector<int>>(1001);
	dist = vector<int>(1001,-1);

	for(int i = 0;i<n-1;i++){
		paths[u[i]].push_back(v[i]);
		paths[v[i]].push_back(u[i]);
	}

	dfs(0,0);
	int head = 0,len = 0;
	for (int i = 0; i < n; i++) {
		if(len<dist[i])head = i;
		len = max(len,dist[i]);
	}
	dist = vector<int>(1001,-1);
	dfs(head,0);

	for (int i = 0; i < n; i++) {
		labels[i] = dist[i];
	}
	return labels;
}

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

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