oj.uz

Submission #1054744

# Submission time Handle Problem Language Result Execution time Memory
1054744 2024-08-12T11:54:45 Z LittleOrange Stations (IOI20_stations) C++17
0 / 100
 395 ms 772 KB 
#include "stations.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;
using ll = int;

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	vector<ll> labels(n);
	iota(labels.begin(),labels.end(),0);
	vector<vector<ll>> con(n);
	for(ll i = 0;i<n-1;i++){
		con[u[i]].push_back(v[i]);
		con[v[i]].push_back(u[i]);
	}
	fill(labels.begin(),labels.end(),-1);
	/*for(ll i = 0;i<n;i++){
		if (con[i].size()==1&&labels[i]==-1){
			ll cur = i;
			ll it = 0;
			while(cur!=-1){
				labels[cur] = it++;
				ll nxt = -1;
				for(ll j : con[cur]) if (labels[j]==-1) nxt = j;
				cur = nxt;
			}
		}
	}*/
	ll rt = 0;
	for(ll i = 0;i<n;i++) if(con[i].size()>2) rt = i;
	labels[rt] = 0;
	ll gp = 0;
	for(ll i : con[rt]){
		ll g = (++gp)*1000;
		ll x = i;
		while(x!=-1){
			labels[x] = g++;
			ll nw = -1;
			for(ll j : con[x]){
				if(labels[j]==-1){
					nw = j;
				}
			}
			x = nw;
		}
	}
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	/*s++;t++;
	ll lgs = __lg(s), lgt = __lg(t);
	if (lgs<lgt){
		ll x = t>>(lgt-lgs);
		if (s==x){
			return (t>>(lgt-lgs-1))-1;
		}
	}
	return (s>>1)-1;*/
	/*if (t>s) return s+1;
	else return s-1;*/
	ll gs = s/1000;
	ll gt = s/1000;
	if (gs==0){
		for(ll i : c){
			if (i/1000==gt) return i;
		}
	}else if(gs==gt){
		if(s>t){
			for(ll i : c){
				if (i<s) return i;
			}
		}else{
			for(ll i : c){
				if (i>s) return i;
			}
		}
	}else{
		for(ll i : c){
			if (i<s) return i;
		}
	}
}

Compilation message

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:82:1: warning: control reaches end of non-void function [-Wreturn-type]
   82 | }
      | ^

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=1, label=2004
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 344 KB Invalid labels (values out of range). scenario=0, k=1000, vertex=0, label=-1
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 258 ms 684 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 395 ms 684 KB Wrong query response.
2 Halted 0 ms 0 KB -

Subtask #5
0 / 61.0

# Verdict Execution time Memory Grader output
1 Incorrect 261 ms 772 KB Wrong query response.
2 Halted 0 ms 0 KB -