using System;
using System.Linq;
public class Test
{
public static void Main()
{
try
{
while (true)
Console.WriteLine(Enumerable.Repeat(Console.ReadLine(), 1).Where(s => s.Length > 5).FirstOrDefault()?.Split(' ')[0]);
}
catch (NullReferenceException)
{
}
}
}
dXNpbmcgU3lzdGVtOwp1c2luZyBTeXN0ZW0uTGlucTsKCnB1YmxpYyBjbGFzcyBUZXN0CnsKICBwdWJsaWMgc3RhdGljIHZvaWQgTWFpbigpCiAgewogIAl0cnkKICAJewogIAkgIHdoaWxlICh0cnVlKQogICAgICAgIENvbnNvbGUuV3JpdGVMaW5lKEVudW1lcmFibGUuUmVwZWF0KENvbnNvbGUuUmVhZExpbmUoKSwgMSkuV2hlcmUocyA9PiBzLkxlbmd0aCA+IDUpLkZpcnN0T3JEZWZhdWx0KCk/LlNwbGl0KCcgJylbMF0pOwogIAl9CiAgCWNhdGNoIChOdWxsUmVmZXJlbmNlRXhjZXB0aW9uKQogIAl7CiAgCX0KICB9Cn0=
MQoxMgoxIDIKMSAyIDMKMSAyIDMgNAoxMiAzCjEyMzQ1CjEyMzQ1NgoxIDIgMyA0IDUKMTIgMzQgNTYKMTIzIDQ1NgoxMjM0IDU2CjEyMzQ1IDYKMTIzNDU2IDcKMTIzNDU2CjEyMzQ1NiA3ODkKMTIzNDU2NwoxMjM0NTY3IDc4OQ==
1
12
1 2
1 2 3
1 2 3 4
12 3
12345
123456
1 2 3 4 5
12 34 56
123 456
1234 56
12345 6
123456 7
123456
123456 789
1234567
1234567 789