using System;
public class Test
{
public static void Main()
{
int a = 5;
int b = 10;
Console.WriteLine("a={0}, b={1}", a, b);
(a, b) = (b, a);
Console.WriteLine("a={0}, b={1}", a, b);
}
}
dXNpbmcgU3lzdGVtOwoKcHVibGljIGNsYXNzIFRlc3QKewoJcHVibGljIHN0YXRpYyB2b2lkIE1haW4oKQoJewoJCWludCBhID0gNTsKCQlpbnQgYiA9IDEwOwoJCQoJCUNvbnNvbGUuV3JpdGVMaW5lKCJhPXswfSwgYj17MX0iLCBhLCBiKTsKCQkoYSwgYikgPSAoYiwgYSk7CgkJQ29uc29sZS5Xcml0ZUxpbmUoImE9ezB9LCBiPXsxfSIsIGEsIGIpOwoJfQp9Cg==