using System;
using System.Text;

public class Foo {
	public Foo(int v) {
		Value = v;
	}
	
	public int Value {get;}
	public static Bar operator*(string s, Foo f) {
		var sb = new StringBuilder();
		for (var i = 0; i < f.Value; i++) sb.Append(s);
		return new Bar(sb.ToString());
	}
}

public class Bar {
	public Bar(string s) {
		Value = s;
	}
	
	public string Value {get;}
	public static string operator*(Bar b, int c) {
		var sb = new StringBuilder();
		for (var i = 0; i < c; i++) sb.Append(b.Value);
		return sb.ToString();
	}
	public static implicit operator string(Bar b) => b.Value;
	public override string ToString() => Value;
}

public class Test
{
	public static void Main()
	{
		var u = new Foo(5);
		Console.WriteLine("!" * u);
		Console.WriteLine("!" * u * 4);
	}
}