Submission #985411

#	Time	Username	Problem	Language	Result	Execution time	Memory
985411		FZ_Melo	Stations (IOI20_stations)	C++14	52.32 / 100	634 ms	1476 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;

vector<vector<int>> adj;
int tam[1001];

void dfs(int node, int ant, vector<int> &labels, int &num){
	labels[node]=num;
	num++;
	tam[node]=0;
	for(int h: adj[node]){
		if(h==ant)
			continue;
		dfs(h, node, labels, num);
		tam[node]+=tam[h]+1;
	}
	labels[node]*=1000;
	labels[node]+=tam[node];
}

std::vector<int> label(int n, int k, std::vector<int> u, std::vector<int> v) {
	vector<int> labels(n);
	adj.clear();
	adj.resize(n+1);
	int num=0;
	for(int i=0; i<n-1; i++){
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}
	dfs(0, 0, labels, num);
	return labels;
}

int find_next_station(int s, int t, std::vector<int> c) {
	int x=s/1000;
	int sub=s-(x*1000);
	if(t/1000>x+sub || t/1000<x){
		for(int i=0; i<c.size(); i++){
			if(x>c[i]/1000)
				return c[i];
		}
	}
	else{
		for(int i=0; i<c.size(); i++){
			if(c[i]/1000<x || c[i]/1000>t/1000)
				continue;
			int id=c[i]/1000;
			int cnt=c[i]-(id*1000);
			if(t/1000<=id+cnt)
				return c[i];
		}
	}
}

Compilation message (stderr)

stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:39:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |   for(int i=0; i<c.size(); i++){
      |                ~^~~~~~~~~
stations.cpp:45:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |   for(int i=0; i<c.size(); i++){
      |                ~^~~~~~~~~
stations.cpp:54:1: warning: control reaches end of non-void function [-Wreturn-type]
   54 | }
      | ^

• Subtask 1: 0 / 5
• Subtask 2: 0 / 8
• Subtask 3: 16 / 16
• Subtask 4: 10 / 10
• Subtask 5: 26.3244 / 61