Подскажите по поводу задачи

public class Main {
public static void main(String[] args) throws IOException {
Tower tower = new Tower(1,2,2,1,3,3);
Tower tower1 = new Tower(2,3,1,1,3,1,4,4);
Tower tower2 = new Tower(3,3,1,1,3,1,4,4);
Tower tower3 = new Tower(4,2,2,4,3,1,2);
ArrayList<Tower>list = new ArrayList<>();
list.add(tower);
list.add(tower1);
list.add(tower2);
list.add(tower3);
}
public Map<Integer,Integer>getid(ArrayList<Tower>list)
{
Map<Integer, Integer>map = new LinkedHashMap<>();
for (int i = 0; i < list.size();i++)
{
if (list.get(i).id==1)
{
if (list.get(i).sosedi==2)
{
int a1 = list.get(i).id1soseda;
int cost1 = list.get(i).cost1;
int a2 = list.get(i).id2soseda;
int cost2 = list.get(i).cost2;
if (cost1<cost2)
{
map.put(a1,cost1);
}
else map.put(a2,cost2);
 
}
}
}
return map;
}
 
 
public static class Tower
{
int sosedi,id,id1soseda,cost1,id2soseda,cost2, id3soseda,cost3;
 
 
public Tower(int id, int sosedi, int id1soseda, int cost1, int id2soseda, int cost2) {
this.sosedi = sosedi;
this.id = id;
this.id1soseda = id1soseda;
this.cost1 = cost1;
this.id2soseda=id2soseda;
this.cost2=cost2;
 
}
public Tower(int id, int sosedi,int id1soseda, int cost1, int id2soseda,int cost2,int id3soseda,int cost3) {
this.sosedi = sosedi;
this.id = id;
this.id1soseda = id1soseda;
this.cost1 = cost1;
this.id2soseda=id2soseda;
this.cost2=cost2;
this.id3soseda=id3soseda;
this.cost3=cost3;
 
 
}
public Tower(int id, int sosedi,int id1soseda, int cost1, int id2soseda,int cost2,int id3soseda) {
this.sosedi = sosedi;
this.id = id;
this.id1soseda = id1soseda;
this.cost1 = cost1;
this.id2soseda=id2soseda;
this.cost2=cost2;
this.id3soseda=id3soseda;
 
 
}
}
}