int list[5]={2,4,8,10,-1};
 int nextList[5]={3,-1,0,1,-1};
 int start = 2;
 int Free = 4;
 void magic(int val , int position){
 int start = ::start;
 for(int i = 0 ; i< position - 1 ; i++)
 start=nextList[start];
 list[Free]=val; nextList[Free]=nextList[start];
 nextList[start]=Free++;
 }
 void magic(){
 int start = ::start;
 while(start != -1){
 cout<<list[start]<<"->";
 start=nextList[start];
 }
 cout<<"*"<<endl;
 }
 int main()
 {
 magic();
 magic(5,2);
 magic();
 return 0;
 }