Submission #402643

#	Time	Username	Problem	Language	Result	Execution time	Memory
402643		Dan4Life	Stations (IOI20_stations)	C++17	0 / 100	1 ms	300 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
vector<int> adj[1001];
int lab = 0;
void dfs(int s, vector<int> &col, int p=-1)
{
    col[s]=lab, lab++;
    for(auto u : adj[s])
    {
        if(u==p) continue;
        dfs(u, col, s);
    }
}

vector<int> label(int n, int k, vector<int> a, vector<int> b)
{
    vector<int> col(n); lab = 0; col.clear();
    for(int i = 0; i < n; i++) adj[i].clear();
	for (int i = 0; i < n-1; i++) {
		adj[a[i]].pb(b[i]);
		adj[b[i]].pb(a[i]);
	}
	for(int i = 0; i < n; i++){
        if(adj[i].size()==1){
            dfs(i, col, -1); break;
        }
	}
	return col;
}

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