using System;
class MainClass
{
static void Main(string[] args)
{
int a,b,c,d,e,f;
a = 1;
b = a + 1;
b = b - 1;
c = 1; d = 2;
++c;
Console.WriteLine(c);
--d;
Console.WriteLine(d);
e = --c;
Console.WriteLine(e);
f = c--;
Console.WriteLine(f);
}
}
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