using System;
using System.IO;
public class Test
{
public static void Main()
{
int a = 0;
int b = 1;
string s = string.Format("{0} {1}", a, b);
switch (s)
{
case "0 1":
Console.WriteLine("0 1");
break;
default:
Console.WriteLine("default");
break;
}
}
}
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