using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Numerics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;

namespace AtCoder
{
	class Program
	{
		static void Main()
		{
		}


		BigInteger SystemNumerics(BigInteger a, BigInteger b) { return a + b; } // System.Numerics.BigInteger
		Span<int> Span(int[] array) { return array.AsSpan(); } // System.Span
	}
}