using System;
using System.Linq;
using System.Collections.Generic;
using System.IO;
 
public class Test
{   
 
	public static void Main()
	{
		    string file = "1839341255115211butterflies.jpg";
            string extension = Path.GetExtension(file);
            string fileName = Path.GetFileNameWithoutExtension(file);
            fileName = new string(fileName.Where((c, i) => i >= 17 || !Char.IsDigit(c)).ToArray());
            file = fileName + extension;
            Console.Write(file);
	}
}

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