Submission #816306

#	Time	Username	Problem	Language	Result	Execution time	Memory
816306		tolbi	Stations (IOI20_stations)	C++17	5 / 100	635 ms	720 KiB

stations

#pragma optimize("Bismillahirrahmanirrahim")
//█▀█─█──█──█▀█─█─█
//█▄█─█──█──█▄█─█■█
//█─█─█▄─█▄─█─█─█─█
//Allahuekber
//ahmet23 orz...
//Sani buyuk Osman Pasa Plevneden cikmam diyor.
//FatihSultanMehmedHan
//YavuzSultanSelimHan
//AbdulhamidHan
#define author tolbi
#include <bits/stdc++.h>
using namespace std;
template<typename X, typename Y> istream& operator>>(istream& in, pair<X,Y> &pr) {return in>>pr.first>>pr.second;}
template<typename X, typename Y> ostream& operator<<(ostream& os, pair<X,Y> pr) {return os<<pr.first<<" "<<pr.second;}
template<typename X> istream& operator>>(istream& in, vector<X> &arr) {for(auto &it : arr) in>>it; return in;}
template<typename X> ostream& operator<<(ostream& os, vector<X> arr) {for(auto &it : arr) os<<it<<" "; return os;}
template<typename X, size_t Y> istream& operator>>(istream& in, array<X,Y> &arr) {for(auto &it : arr) in>>it; return in;}
template<typename X, size_t Y> ostream& operator<<(ostream& os, array<X,Y> arr) {for(auto &it : arr) os<<it<<" "; return os;}
#define endl '\n'
#define vint(x) vector<int> x
#define deci(x) int x;cin>>x;
#define decstr(x) string x;cin>>x;
#define cinarr(x) for (auto &it : x) cin>>it;
#define coutarr(x) for (auto &it : x) cout<<it<<" ";cout<<endl;
#define sortarr(x) sort(x.begin(),x.end())
#define sortrarr(x) sort(x.rbegin(),x.rend())
#define det(x) cout<<"NO\0YES"+x*3<<endl;
#define INF LONG_LONG_MAX
#define rev(x) reverse(x.begin(),x.end());
#define ios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define tol(bi) (1LL<<((int)(bi)))
const int MOD = 1e9+7;
mt19937 ayahya(chrono::high_resolution_clock().now().time_since_epoch().count());
#include "stations.h"
vector<vector<int>> arr;
vector<int> labels;
int ind;
int _n;
void dfs(int node, int lnode){
	labels[node]=ind++;
	for (int i = 0; i < arr[node].size(); i++){
		if (arr[node][i]==lnode) continue;
		dfs(arr[node][i],node);
	}
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	_n=n;
	arr.clear();
	arr.resize(n);
	labels.clear();
	labels.resize(n,-1);
	ind=0;
	for (int i = 0; i < n-1; i++){
		arr[u[i]].push_back(v[i]);
		arr[v[i]].push_back(u[i]);
	}
	for (int i = 0; i < n; ++i)
	{
		if (arr[i].size()==1){
			dfs(i,-1);
			break;
		}
	}
	return labels;
}
 
int find_next_station(int s, int t, std::vector<int> c) {
	for (int i = c.size()-1; i >= 1; i--){
		if (t>=c[i]) return c[i];
	}
	return c[0];
}

Compilation message (stderr)

stations.cpp:1: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    1 | #pragma optimize("Bismillahirrahmanirrahim")
      | 
stations.cpp: In function 'void dfs(int, int)':
stations.cpp:42:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |  for (int i = 0; i < arr[node].size(); i++){
      |                  ~~^~~~~~~~~~~~~~~~~~

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