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Forum: Programming 2006-08-18, 05:40
Replies: 7
Views: 1,276
Posted By c00ler
Tried CpuSupportsSSE=0 CpuSupportsSSE2=0 ...

Tried
CpuSupportsSSE=0
CpuSupportsSSE2=0

These options don't affect corruption, also there is not even a 1% difference in benchmark in both 32 bit and x64.

32 bit prime95 is not affected by...
Forum: Programming 2006-08-17, 21:11
Replies: 7
Views: 1,276
Posted By c00ler
Something strange with latest prime95 x64 under...

Something strange with latest prime95 x64 under windows 2003 x64 (athlon 64 3200+, 2gb ram).

1) Start torture test or prime testing, then (maybe even after some time) start playing video...
Forum: Puzzles 2003-09-16, 19:56
Replies: 27
Views: 2,588
Posted By c00ler
Another puzzle about Fibonacci numbers

Puzzle by hyh1048576:



Can anyone prove that S=Pi/2?
Forum: Puzzles 2003-08-31, 05:30
Replies: 10
Views: 2,634
Posted By c00ler
I need only 7 races :banana:

I need only 7 races :banana:
Forum: Puzzles 2003-08-30, 18:08
Replies: 38
Views: 2,577
Posted By c00ler
My new(just added some optimizations) program: ...

My new(just added some optimizations) program:
[code:1]
const rdd:extended =1/6;
rd:extended =1/3;
rd2:extended =1/9;
rd3:extended =4/9;
rdln3:extended ...
Forum: Puzzles 2003-08-22, 19:59
Replies: 34
Views: 2,309
Posted By c00ler
It depends on the watcher. If it's static...

It depends on the watcher.
If it's static watcher then area looks like a trapezoid (BTW, in your case about wrapping around the silo it looks like a quadrangle)
But if he is attached to the moving...
Forum: Puzzles 2003-08-22, 10:38
Replies: 34
Views: 2,309
Posted By c00ler
Ok. Suppose that constant length of chain is...

Ok.
Suppose that constant length of chain is sweeping the grass (n ft).
Let it go from 0 to 360 degrees. The area it sweeps is A1.
Then take straight chain (length 25+n ft) attach one end to the...
Forum: Puzzles 2003-08-22, 08:23
Replies: 34
Views: 2,309
Posted By c00ler
Yes, but polar coordinate system must be static....

Yes, but polar coordinate system must be static. But the origin of your system is moving along the edge of the silo

because the point of tangency is moving.
Or in other words this formula must be...
Forum: Puzzles 2003-08-21, 19:44
Replies: 34
Views: 2,309
Posted By c00ler
Oops. The R*L=2500 sq ft must be added to my...

Oops. The R*L=2500 sq ft must be added to my answers.


And here is the solution.

L-length of the chain
R-radius of the silo
Coordinate system:
The origin - the center of the silo.
The...
Forum: Puzzles 2003-08-21, 11:13
Replies: 25
Views: 1,963
Posted By c00ler
Ok, we must use 52 time-based seeds and/or...

Ok, we must use 52 time-based seeds and/or hardware PRNG.
The way to do it is to choose the seed just before generating the next random number.
Also we need to run for example prime95 to randomize...
Forum: Puzzles 2003-08-21, 09:56
Replies: 34
Views: 2,309
Posted By c00ler
What about 25516.9262122935 sq ft (Using...

What about 25516.9262122935 sq ft (Using Wackerbarth's Tf)
Or 25516.9260688448 sq ft (Using more precise value of Tf)

The formula is (pi*L^2)/2 + ((L^3)-(L-Tf*R)^3)/(3*R) - (pi*R^2)
Where L -...
Forum: Puzzles 2003-08-21, 09:18
Replies: 25
Views: 1,963
Posted By c00ler
But why we must use only 1 seed for all numbers? ...

But why we must use only 1 seed for all numbers?
We can generate 52 random seeds to generate (2^64)^52 random sequences.
Only problem is that random with random seed must be random number...
Forum: Puzzles 2003-08-20, 22:15
Replies: 34
Views: 2,309
Posted By c00ler
Wackerbarth is right. I got the same results. ...

Wackerbarth is right. I got the same results.

And I've found that Tf is the solution(the smallest positive one) of
(x-4)^2=tg(x)^2+sin(x)^2
So x is non-algebraic (Is not a root of polynomial...
Forum: Puzzles 2003-08-20, 22:03
Replies: 25
Views: 1,963
Posted By c00ler
Hint is wrong. There must be (2^64)^52 (there...

Hint is wrong.
There must be (2^64)^52 (there are 52 random numbers)
And 2^3328>10^998>>8.1E67>52!
Moreover: Program can generate all permutations, but they can be not equaly likely.

So it's...
Forum: Puzzles 2003-08-20, 21:25
Replies: 38
Views: 2,577
Posted By c00ler
My new program checks 10 values per second at...

My new program checks 10 values per second at sizes of piles 1000000+ 8)

I'll try to do it faster and then I'll post it.
Forum: Puzzles 2003-08-19, 20:44
Replies: 6
Views: 746
Posted By c00ler
I'm posting solutions !WARNING! if you are...

I'm posting solutions

!WARNING! if you are far from math skip mathemetician's solution

L-distance between buildings
a-length of the ladder #1 (45 ft)
b-length of the ladder #2 (60 ft) ...
Forum: Puzzles 2003-08-19, 08:42
Replies: 38
Views: 2,577
Posted By c00ler
I've found all the solutions less than record. ...

I've found all the solutions less than record.
Program that founds all solutions less than nmax:
1) generate array (a[n]=n*(n+1)*(n+2)/6 for n=1..nmax)
2) for i:=1 to nmax do for j:=1 to i-1 do ...
Forum: Puzzles 2003-08-18, 19:17
Replies: 10
Views: 1,081
Posted By c00ler
Yes! If the snowball is so big that it's...

Yes!
If the snowball is so big that it's gravity field is important than it's radius is very very big (some 100's or even 1000's of kilometers) and g<>9.8m/s/s because it depends on the distance...
Forum: Puzzles 2003-08-18, 19:08
Replies: 6
Views: 746
Posted By c00ler
The distance is approximately 39.0493163163478...

The distance is approximately 39.0493163163478 feet.
It's non-analytical brute-force answer.

Later I'll calculate the real value of the distance, and I'll post "programmer's" and...
Forum: Puzzles 2003-08-18, 18:54
Replies: 38
Views: 2,577
Posted By c00ler
I used very stupid Delphi program and record is ...

I used very stupid Delphi program and record is
6590687693369780+952833181691720=7543520875061500 balls
(sides are 340690,178808 and 356375 balls)
Who can beat it?

P.S. And who can prove that...
Forum: Math 2003-08-08, 07:47
Replies: 28
Views: 3,679
Posted By c00ler
Very short proof by contradiction: f(x)...

Very short proof by contradiction:
f(x) generates only primes.
n-degree of f(x), so n>0

f(x)>1 for integer x (it must be prime).
So f(0)>1, f(0) is prime.
Then f(k*f(0)) is divisible by f(0)...
Forum: Puzzles 2003-08-07, 06:37
Replies: 10
Views: 1,081
Posted By c00ler
Patrik is right. R*sin(theta) is horisontal. ...

Patrik is right.
R*sin(theta) is horisontal.
Vertical is R*(1-cos(theta)).
So N=m*g*(3*cos(theta)-2).
And N=0 <=> cos(theta)=2/3
So theta=arccos(2/3)~=48,1896851042214019341420832694217 deg (Pi...
Forum: Puzzles 2003-08-06, 19:12
Replies: 10
Views: 1,081
Posted By c00ler
v-speed of sled 1) m*v^2/2=m*g*R*sin(theta)...

v-speed of sled
1) m*v^2/2=m*g*R*sin(theta) (energy is not lost)
so 2*g*R*sin(theta)=v^2
and v^2/R=2*g*sin(theta)
we know that tangencial velocity (a_t) is equal to v^2/R when sled is on the...
Forum: Puzzles 2003-08-06, 18:25
Replies: 10
Views: 1,081
Posted By c00ler
My answer: theta=arctg(1/2) So, theta~=...

My answer:
theta=arctg(1/2)
So, theta~= 26,5650511770779893515721937204533 deg

Solution will be posted later.
Forum: Puzzles 2003-07-16, 20:02
Replies: 5
Views: 4,088
Posted By c00ler
The first one wins! hints: 1)first move -...

The first one wins!

hints:
1)first move - make 1+3+7
2)one, who makes a+a+b+b+a+a (symmetrical position), loses


P.S. If objective is not to remove the last token then the first wins too....
Showing results 1 to 25 of 25

 
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