Submission #350837

#	Time	Username	Problem	Language	Result	Execution time	Memory
350837		tengiz05	Stations (IOI20_stations)	C++17	0 / 100	951 ms	1108 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> edges[1005];
int a[1005];
vector<bool> used;
int timer=0;
void dfs(int u, int d){
	if(d==0)a[u] = timer,timer++;
	used[u] = true;
	for(auto v:edges[u]){
		if(used[v])continue;
		dfs(v,d^1);
	}if(d==1)a[u] = timer,timer++;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	for(int i=0;i<n;i++)edges[i].clear();
	for(int i=0;i<n-1;i++){
		edges[u[i]].push_back(v[i]);
		edges[v[i]].push_back(u[i]);
	}
	timer=0;
	used.assign(n,0);
	dfs(0,0);
	vector<int> ans(n);
	for(int i=0;i<n;i++)ans[i] = a[i];
	return ans;
}
/*
 
1
5 10
0 1
1 2
2 3
3 4
3
1 3 121
1 4 121
0 1 122
 
*/
 
int find_next_station(int s, int t, vector<int> c) {
	if(c[c.size()-1] < s){
		int ans = c[0];
		for(auto x : c){
			if(min(s, x) <= t && t <= max(s, x))return x;
		}return ans;
	}else {
		for(auto x : c)if(min(s, x) <= t && t <= max(s, x))return x;
		return c[c.size()-1];
	}
}

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