Playground

import System;

public value N
{
	public:
		i64 X;
		new(i64 X);

		op +(N a, N b) : N => new N(a.X + b.X);
		op *(N a, N b) : N => new N(a.X * b.X);

		op ^^(N a, N b) : N precedence(PrecedenceLevel.Power) associativity(Associativity.Right)
		{
			i64 r = 1;
			loop (i64 i = 0..b.X)
				r = r * a.X;
			return new N(r);
		}

		op <=>(N a, N b) : i32 precedence(PrecedenceLevel.Relational) associativity(Associativity.None)
			=> a.X < b.X ? -1 : a.X > b.X ? 1 : 0;

		op <*>(N a, N b) : N precedence(135) => new N(a.X * 100 + b.X);
}

Main()
{
	N two = new N(2);
	N three = new N(3);
	Console.WriteLine((two ^^ three ^^ two).X);
	Console.WriteLine(two <=> three);
	Console.WriteLine((two + two <*> two * three).X);
}