import java.util.*;
import java.lang.*;
import java.io.*;
class Main {
public static List<Integer> countRotations(int nCogWheels, List<List<Integer>> connections){
HashMap<Integer,String> map = new HashMap<>();
System.err.println("Ajout Wheel 0");
map.put(0,"clockwise");
for(List<Integer> wheelList : connections){
//System.err.println(wheelList);
if(map.containsKey(wheelList.get(1))){
System.err.println("Wheel " + wheelList.get(1) + " est dans la liste");
if(wheelList.get(1) != 0){
System.err.println("Check rotation wheels...");
if(map.get(wheelList.get(0)).equals(map.get(wheelList.get(1)))) {
System.err.println("DEADLOCK : configuration invalide");
return Arrays.asList(-1, -1);
}
System.err.println("Configuration valide");
}
}else{
System.err.println("Ajout Wheel " + wheelList.get(1));
if(map.get(wheelList.get(0)).equals("clockwise"))
map.put(wheelList.get(1), "counterclockwise");
else
map.put(wheelList.get(1),"clockwise");
}
}
int clockwise=0;
int counterclockwise=0;
for (Map.Entry<Integer, String> entry : map.entrySet()) {
//System.err.println("wheel: " + entry.getKey() + ", direction: " + entry.getValue());
if(entry.getValue().equals("clockwise"))
clockwise+=1;
else
counterclockwise+=1;
}
return Arrays.asList(clockwise,counterclockwise);
}
public static void main(String[] args) {
System.out.println(countRotations(5,Arrays.asList(Arrays.asList(0,2),
Arrays.asList(2,4),
Arrays.asList(2,1),
Arrays.asList(1,3),
Arrays.asList(3,4))));
System.out.println(countRotations(3,Arrays.asList(Arrays.asList(0,1),
Arrays.asList(1,2),
Arrays.asList(0,2))));
}
}
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