Submission #1095708

#	Time	Username	Problem	Language	Result	Execution time	Memory
1095708		Newtonabc	Stations (IOI20_stations)	C++14	0 / 100	571 ms	684 KiB

stations

#include "stations.h"
#include <bits/stdc++.h>
using namespace std;
const int N=1e3+10;
int tmpcase1,cnt=0;
bool case1;
vector<int> adj[N],lb;
void labelcase1(int u,int p){
	lb[u]=cnt++;
	for(int i=0;i<adj[u].size();i++){
		if(adj[u][i]!=p) labelcase1(adj[u][i],u);
	}
}
vector<int> label(int n, int k, vector<int> u, vector<int> v) {
	lb.resize(n);
	case1=true;
	for(int i=0;i<n-1;i++){
		adj[u[i]].push_back(v[i]);
		adj[v[i]].push_back(u[i]);
	}
	for(int i=0;i<n;i++){
		if(adj[i].size()>2) case1=false;
		if(adj[i].size()==1) tmpcase1=i;
	}
	if(case1){
		labelcase1(tmpcase1,-1);
	}
	/*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) {
	sort(c.begin(),c.end());
	if(s<t) return c[1];
	return c[0];
}

Compilation message (stderr)

stations.cpp: In function 'void labelcase1(int, int)':
stations.cpp:10:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |  for(int i=0;i<adj[u].size();i++){
      |              ~^~~~~~~~~~~~~~

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