Didn't do well in this monthly exam.Got the 7th in class,and the 215th in grade.
It seems that my Core-i7 is far away......
Why..
I should have only worked out the second computing problem in the Mathematic Exam.Then the 12 points bonus will lead me to 140+- and I would get what I want...
Life is struggle,truely?
Then what can I do,what should I do,give up programming?
Why so few choices.
It's NOT FAIR...
Tuesday 7 April 2009
Thursday 2 April 2009
Struggle
Calendar full of exams.
I hate exams.
I hate school!
Bought many things these days.About C++ and Windows,several novels,and two board games.
If got a good result in exams.Will invite some friends home to play A Game Of Thrones(The Board Game).
I hate exams.
I hate school!
Bought many things these days.About C++ and Windows,several novels,and two board games.
If got a good result in exams.Will invite some friends home to play A Game Of Thrones(The Board Game).
Friday 27 March 2009
Tuesday 17 March 2009
Thursday 12 March 2009
Why E-mail Not IM
I used to like QQ very much.There's no doubt that QQ is a legend,it truely influenced a generation of Chinese teenager.I'm not one of those so called QQ fans,but I believe that Tecent is one of the most successful companies all around the world.
But,these days I suddenly realised some disadvantages of QQ,maybe I've thought about this before,but never came up to me so strongly.I'm not thinking QQ is useless,for it has convenient image and file send function and many other services.However,I found that put QQ online while working or studying is not a good idea.Because I would waste a lot of time talking things not connected to my study or work.
I admire,I'm tired.
And I hate to be invisible using QQ.
If you see me online next time,please talk with me,for that means I'm really lonely.Hope this will never happen(which seems impossible).
You can contact me via E-mail.If you ever used Gmail or other E-mail services to contact the others.I think you would agree with me that when writing an E-mail,we'll ignore most of the useless sentences.And that's why I choose it.
Or,you can talk with me via GTalk.It's a simple client with a simple UI which was developed Google.
Eh...I'm not asking you to use it.HE~
And maybe I will not reply you.
Sorry.I'm really tired.
Status : Offline.
-AquarHEAD : AquarHEAD@gmail.com
But,these days I suddenly realised some disadvantages of QQ,maybe I've thought about this before,but never came up to me so strongly.I'm not thinking QQ is useless,for it has convenient image and file send function and many other services.However,I found that put QQ online while working or studying is not a good idea.Because I would waste a lot of time talking things not connected to my study or work.
I admire,I'm tired.
And I hate to be invisible using QQ.
If you see me online next time,please talk with me,for that means I'm really lonely.Hope this will never happen(which seems impossible).
You can contact me via E-mail.If you ever used Gmail or other E-mail services to contact the others.I think you would agree with me that when writing an E-mail,we'll ignore most of the useless sentences.And that's why I choose it.
Or,you can talk with me via GTalk.It's a simple client with a simple UI which was developed Google.
Eh...I'm not asking you to use it.HE~
And maybe I will not reply you.
Sorry.I'm really tired.
Status : Offline.
-AquarHEAD : AquarHEAD@gmail.com
Sunday 1 March 2009
Failed Junk Exam
Another junk exam,this time failed a lot....
And today I read the ZOJ 7th Anniversary Contest problems via my SE W958C and code 3 of 7 problems.
Just now submitted the codes,one 1A,one forget to initialization,2A,the other forget to use Int64,2A...
Not in normal status...
Need a completely change....
And today I read the ZOJ 7th Anniversary Contest problems via my SE W958C and code 3 of 7 problems.
Just now submitted the codes,one 1A,one forget to initialization,2A,the other forget to use Int64,2A...
Not in normal status...
Need a completely change....
Friday 27 February 2009
Books I Wanna Buy
Microsoft Windows Internal--4th Edition,5th Edition
Windows Via C/C++
Win32 API
Structure and Interpretation of Computer Programs
The Art Of Computer Programming--1,3
Concrete Mathematics
P.S:Adding...
Windows Via C/C++
Win32 API
Structure and Interpretation of Computer Programs
The Art Of Computer Programming--1,3
Concrete Mathematics
P.S:Adding...
Sunday 22 February 2009
Saturday 21 February 2009
Iron Chain Solved
I found that yesterday I forgot the theorem of kinetic energy when I was discussing this problem with CPY this morning.
Yeah,I just got an Accepted on this problem.I want to share my thoughts with all of you~~
I suppose you know that using the theorem of kinetic energy you can get the relation between velocity and displacement:
v=[2*g*x*(b-a+x)/(a+b)]^-1
P.S.:x is the displacement of one end of the iron chain.
So,we can suppose that the velocity in a VERY LITTILE displacement is increasing at a constant speed,then we can figure out the time the chain spent passing this VERY LITTLE displacement,then add the time the iron chain straightly falling down,and we will have some code like this bellow:
Then you can output the variable time as answer~
I am only a high school student in China,and I know my English isn't very well...
Hope this post useful to you,and hope you can understand my meaning..
HEHE~
Yeah,I just got an Accepted on this problem.I want to share my thoughts with all of you~~
I suppose you know that using the theorem of kinetic energy you can get the relation between velocity and displacement:
v=[2*g*x*(b-a+x)/(a+b)]^-1
P.S.:x is the displacement of one end of the iron chain.
So,we can suppose that the velocity in a VERY LITTILE displacement is increasing at a constant speed,then we can figure out the time the chain spent passing this VERY LITTLE displacement,then add the time the iron chain straightly falling down,and we will have some code like this bellow:
Then you can output the variable time as answer~
I am only a high school student in China,and I know my English isn't very well...
Hope this post useful to you,and hope you can understand my meaning..
HEHE~
Friday 20 February 2009
Iron Chain
A problem from an online judge system:
In physics class, the teacher shows us an interesting physics experiment. He hangs an iron chain on a fixed point on the wall. (Look at the right picture for more details). If the lengths of the iron chains on the left side and right side are different, the gravity forces the iron chain to drop to the floor and hits the sensor. Then the computer shows the F-t functional image on the screen. The teacher wants to teach you momentum and its conservation.
But you are not interested in this at all. The thing you want to know is how long it takes for the iron chain to drop to the floor.
You can assume that the iron chain is well-mixed, and you can ignore the friction between the iron chain and the fixed point on the wall. The friction between the chain and the air needn’t be taken into account either. The fixed point is a particle whose radius is 0. And the acceleration of gravity, or so-called g, is 9.80665m/s^2 in this problem.
Example:
1.Input: a=0 ,b=10,h=20
Output: t=1.428s
2.Input: a=1,b=3,h=4
Output: t=0.595s
============Cut-Off Rule===========
I've tried the approximation algorithm.But I couldn't pass through the judge.[I've passed the Examples before.]
And I communicated with CPY about using Calculus to solve this problem,but we couldn't solve the equation.
Who can help me....
In physics class, the teacher shows us an interesting physics experiment. He hangs an iron chain on a fixed point on the wall. (Look at the right picture for more details). If the lengths of the iron chains on the left side and right side are different, the gravity forces the iron chain to drop to the floor and hits the sensor. Then the computer shows the F-t functional image on the screen. The teacher wants to teach you momentum and its conservation.
But you are not interested in this at all. The thing you want to know is how long it takes for the iron chain to drop to the floor.
You can assume that the iron chain is well-mixed, and you can ignore the friction between the iron chain and the fixed point on the wall. The friction between the chain and the air needn’t be taken into account either. The fixed point is a particle whose radius is 0. And the acceleration of gravity, or so-called g, is 9.80665m/s^2 in this problem.
Example:
1.Input: a=0 ,b=10,h=20
Output: t=1.428s
2.Input: a=1,b=3,h=4
Output: t=0.595s
============Cut-Off Rule===========
I've tried the approximation algorithm.But I couldn't pass through the judge.[I've passed the Examples before.]
And I communicated with CPY about using Calculus to solve this problem,but we couldn't solve the equation.
Who can help me....
Wednesday 18 February 2009
Friday 6 February 2009
Rate My Life
| This Is My Life, Rated | |
| Life: |  7.4 |
| Mind: | 7.8 |
| Body: |  7.3 |
| Spirit: | 6.8 |
| Friends/Family: |  6.3 |
| Love: |  3.6 |
| Finance: |  5.5 |
| Take the Rate My Life Quiz | |
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