using System;
using System.Collections;
class Program
{
static void Main(string[] args)
{
BitArray bits = new BitArray(new[] { true, false, true, false, true, true });
for (int i = 0; i < bits.Length; i++) {
bits[i] ^= true;
}
for (int i = 0; i < bits.Length; i++){
Console.Write(bits[i] ? "1" : "0");
}
}
}
/*
run:
010100
*/