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Changed that to:
for (Int16 unlocker = 1; unlocker <= 1000; unlocker++)
{
for (int door = 0; door < 1000; door++)
{
if ((door+1) % unlocker == 0)
doors[door] *= -1;
}
}
In Word you can only store 2 bytes. That is why I use Writer.
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You can cut it down to for (int door = unlocker - 1; door < 1000; door++)... and 'unlocker' never will touch the door before his own position...
Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.
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n^2
Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.
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Don't forget to take away the number you first thought of.
I wanna be a eunuchs developer! Pass me a bread knife!
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Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.
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Very good, now tell me: Who owns the zebra? 
Anything that is unrelated to elephants is irrelephant
Anonymous
-
The problem with quotes on the internet is that you can never tell if they're genuine
Winston Churchill, 1944
-
I'd just like a chance to prove that money can't make me happy.
Me, all the time
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The Japanese...
Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.
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Johnny J. wrote: Who owns the zebra?
Wha?
I thought I was the only one who'd ever seen that puzzle!
(A Readers' Digest puzzle special from the '70s, wasn't it?)
I wanna be a eunuchs developer! Pass me a bread knife!
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Oh, no, it was quite popular in Denmark some 30 odd years ago... 
Anything that is unrelated to elephants is irrelephant
Anonymous
-
The problem with quotes on the internet is that you can never tell if they're genuine
Winston Churchill, 1944
-
I'd just like a chance to prove that money can't make me happy.
Me, all the time
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What's really weird is that I only thought about it Saturday, because I noticed a puzzle magazine in a rack at Rotterdam Centraal railway station that was filled with nothing but that kind of puzzle (with the grids already drawn).
I can't remember the other half of the question, though:
Who ..., and who owns the zebra?
I wanna be a eunuchs developer! Pass me a bread knife!
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I think it was "Who drinks water"???
Anything that is unrelated to elephants is irrelephant
Anonymous
-
The problem with quotes on the internet is that you can never tell if they're genuine
Winston Churchill, 1944
-
I'd just like a chance to prove that money can't make me happy.
Me, all the time
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Very likely!
I had "who drinks tea" stuck in my head, but I knew it was wrong.
I wanna be a eunuchs developer! Pass me a bread knife!
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Could be the British version. I've seen different versions of it with localized content. I guess it was because not all types of drinks and cigarettes (afair) were availble in all countries...
Anything that is unrelated to elephants is irrelephant
Anonymous
-
The problem with quotes on the internet is that you can never tell if they're genuine
Winston Churchill, 1944
-
I'd just like a chance to prove that money can't make me happy.
Me, all the time
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It is on Wikipedia[^]! 
Spolier alert: The solution is also there! 
Anything that is unrelated to elephants is irrelephant
Anonymous
-
The problem with quotes on the internet is that you can never tell if they're genuine
Winston Churchill, 1944
-
I'd just like a chance to prove that money can't make me happy.
Me, all the time
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Johnny J. wrote: It is on Wikipedia[^]!
Good God!
Talk about a mine of useless information...
I wanna be a eunuchs developer! Pass me a bread knife!
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I even know the mathematical explanation about the number of dividers of perfect square numbers...
Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.
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Post the explanation then. I was going to, but wanted somebody else to answer it.
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The idea is to see how many dividers a number has... If it is an odd number than the door visited by that number (student is represented as a number) will be opened at the end, if the number of dividers are even it will be shut...
Without getting into the proof I will state that (in the case of positive whole numbers) every number has an even number of dividers except the square numbers... The largest square number that smaller then 1000 is 312 (322 we all know to be 1K), so the number of the opened lockers is 31!
(12, 22, 32... 312)
Skipper: We'll fix it.
Alex: Fix it? How you gonna fix this?
Skipper: Grit, spit and a whole lotta duct tape.
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Bassam Abdul-Baki wrote: You have 1,000 locked rooms and 1,000 people monkeys.
FTFY! 
Anything that is unrelated to elephants is irrelephant
Anonymous
-
The problem with quotes on the internet is that you can never tell if they're genuine
Winston Churchill, 1944
-
I'd just like a chance to prove that money can't make me happy.
Me, all the time
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Ain't this the number of prime number between 1 and 1000 ? (168 or 167, I think)
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Nyet! It's the number of something though.
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Bassam Abdul-Baki wrote: It's the number of something though
Ah, I should have known that.
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666? 
Anything that is unrelated to elephants is irrelephant
Anonymous
-
The problem with quotes on the internet is that you can never tell if they're genuine
Winston Churchill, 1944
-
I'd just like a chance to prove that money can't make me happy.
Me, all the time
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It's the number of square numbers in the range - 1, 4, 9, etc.
But you're throwing us off by starting the door numbers at 1. Everybody knows they should start at 0! 
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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