using System.Collections.Generic;
public static void Main()
List<int> numbers= Console.ReadLine().Split().Select(int.Parse).ToList();
string[] commands= Console.ReadLine().Split();
int index=int.Parse(commands[1]);
int element=int.Parse(commands[2]);
numbers.Insert(index,element);
else if(commands[0]=="addMany")
int index=int.Parse(commands[1]);
List<int> elements = new List<int>();
else if(commands[0]=="contains")
int element=int.Parse(commands[1]);
int index = numbers.IndexOf(element)