using System;
class A : System.Collections.IEnumerable
{
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator()
{
return null;
}
public void Add(string s)
{
Console.WriteLine("add " + s);
}
}
public class Test
{
public static void Main()
{
// your code goes here
A a = new A{ "hello", "world "};
}
}
dXNpbmcgU3lzdGVtOwoKY2xhc3MgQSA6IFN5c3RlbS5Db2xsZWN0aW9ucy5JRW51bWVyYWJsZQp7ClN5c3RlbS5Db2xsZWN0aW9ucy5JRW51bWVyYXRvciBTeXN0ZW0uQ29sbGVjdGlvbnMuSUVudW1lcmFibGUuR2V0RW51bWVyYXRvcigpCnsKICAgIHJldHVybiBudWxsOwp9CnB1YmxpYyB2b2lkIEFkZChzdHJpbmcgcykKewpDb25zb2xlLldyaXRlTGluZSgiYWRkICIgKyBzKTsKfQp9CgpwdWJsaWMgY2xhc3MgVGVzdAp7CglwdWJsaWMgc3RhdGljIHZvaWQgTWFpbigpCgl7CgkJLy8geW91ciBjb2RlIGdvZXMgaGVyZQoJCUEgYSA9IG5ldyBBeyAiaGVsbG8iLCAid29ybGQgIn07Cgl9Cn0=