Submission #1095966

#	Time	Username	Problem	Language	Result	Execution time	Memory
1095966		Newtonabc	Stations (IOI20_stations)	C++14	0 / 100	627 ms	684 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
const int N=1e3+10;
int tmpcase1,cnt=0,root;
vector<int> adj[N],lb;
void dfs(int u,int p){
	for(int i=0;i<adj[u].size();i++){
		int v=adj[u][i];
		if(v!=p) dfs(v,u);
	}
	lb[u]=cnt++;
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	lb.resize(n);
	cnt=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,-1);
	for(int i=0;i<n;i++) adj[i].clear();
	/*for(int i=0;i<lb.size();i++) cout<<lb[i] <<" ";
	cout<<"\n\n\n";*/
	return lb;
}

int find_next_station(int s, int t, vector<int> c) {
	//for(int i=0;i<c.size();i++) cout<<c[i] <<" ";
	//cout<<c.size();
	//cout<<"\n";
	int ind=lower_bound(c.begin(),c.end(),t)-c.begin();
	if(ind==c.size()) ind--;
	return c[ind];
	
}

Compilation message (stderr)

stations.cpp: In function 'void dfs(int, int)':
stations.cpp:8:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |  for(int i=0;i<adj[u].size();i++){
      |              ~^~~~~~~~~~~~~~
stations.cpp: In function 'int find_next_station(int, int, std::vector<int>)':
stations.cpp:33:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   33 |  if(ind==c.size()) ind--;
      |     ~~~^~~~~~~~~~

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