Submission #1032032

#	Time	Username	Problem	Language	Result	Execution time	Memory
1032032		hotboy2703	Stations (IOI20_stations)	C++17	16 / 100	603 ms	1028 KiB

stations

#include "stations.h"
#include<bits/stdc++.h>
using namespace std;
using ll = int;
#define pll pair <ll,ll>
#define fi first
#define se second
#define MP make_pair
#define sz(a) (ll((a).size()))
#define BIT(mask,i) (((mask) >> (i))&1)
#define MASK(i) (1LL<<(i))
const ll MAXN = 1010;
vector <ll> g[MAXN];
vector <ll> labels;
ll timeDFS;
void dfs(ll u,ll p,bool dep){
	if (dep==0)labels[u]=timeDFS++;
	for (auto v:g[u]){
		if (v==p)continue;
		dfs(v,u,1-dep);
	}
	if (dep==1)labels[u]=timeDFS++;
}
std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	for (ll i = 0;i < n;i++)g[i].clear();
	for (ll i = 0;i < sz(u);i ++){
		g[u[i]].push_back(v[i]);
		g[v[i]].push_back(u[i]);
	}
	labels.resize(n);
	dfs(0,0,0);
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	bool dep = 0;
	for (auto x:c)if (x < s)dep = 1;
	if (dep){
		c.push_back(s);
		for (ll j = 1;j < sz(c);j ++){
			if (c[j] <= t && t < c[j+1])return c[j];
		}
		return c[0];
	}
	else{
		c.insert(c.begin(),s);
		for (ll i = 1;i + 1 < sz(c);i ++){
			if (c[i-1] <= t && t <= c[i])return c[i];
		}
		return c.back();
	}
	return c[0];
}

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