Submission #1039135

#	Time	Username	Problem	Language	Result	Execution time	Memory
1039135		Dan4Life	Stations (IOI20_stations)	C++17	0 / 100	569 ms	900 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) begin(a),end(a)
using ll = long long;
using vi = vector<int>;
const int mxN = 1010;
vi labels;
int dfs_timer = 0;
vi adj[mxN];

void dfs(int s, int p){
	labels[s] = dfs_timer++;
	for(auto u : adj[s])
		if(u!=p) dfs(u,s);
}

vi label(int n, int k, vi u, vi v) {
    labels.clear();
	labels.resize(n,0); dfs_timer=0;
	for(int i = 0; i < n; i++) adj[i].clear();
	for(int i = 0; i < sz(u); i++){
		int a = u[i], b = v[i];
		adj[a].pb(b), adj[b].pb(a);
	}
	dfs(0,-1);
	return labels;
}

int find_next_station(int s, int t, vi c) {
	if(t < s) return c[0];
	int pos = lower_bound(all(c),t)-begin(c)-1;
	if(pos!=-1 and pos!=sz(c)) return c[pos];
	return c[0];
}

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