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| Показать все ветки Спрятать все ветки Показать все сообщения Спрятать все сообщения | | WA with cout AC with printf | jagatsastry | 1550. Пирамида декана 3 | 11 окт 2010 15:25 | 6 | This is terribly hilarious people. No precision details have been given in the question. Yet printf("%.5f",val); worked but cout<<val; didnt(WA#4). BTW the method i followed is: Find the volume of the pyramid vol(h,w)=hw*w/3 (i got it by integrating the squares at heights from 0 to h) Find the volume of the truncated cylinder using the method given in http://mathworld.wolfram.com/CylindricalSegment.htmlsubtract the second from the first. I couldnt accept this task in C++.
#include<iostream>
#include<math.h>
using namespace std;
int main()
{
double w,h,x,y,r,t;
cin >> w >> h >> x >> y >> r;
x = fabs(x);
y = fabs(y);
if ( y > x ) x = y;
printf("%.5lf", h * w * w / 3.0 - h * 3.14159265358979 * r * r * ( w/2 - x ) / (w/2));
return 0;
}
take WA3, but analogical
import java.io.*;
import java.util.*;
public class Problem1550 {
/**
* @param args
*/
public static void main(String[] args)
throws IOException
{
Scanner in=new Scanner(System.in);
//Scanner in=new Scanner(new File("input.txt"));
PrintWriter out=new PrintWriter(System.out);
double h,w,x,y,r;
h=in.nextDouble();
w=in.nextDouble();
x=in.nextDouble();
y=in.nextDouble();
r=in.nextDouble();
x=Math.abs(x);
y=Math.abs(y);
if(y>x)x=y;
w=h*w*w/3-(Math.PI*r*r*(h*(w/2-x)/(w/2)));
out.println(Double.toString(w));
out.flush();
}
}
in Java - accepted. I hate this problem! there is mistake in c++ code
Edited by author 09.04.2008 21:14 Here is a very fool mistake in C++ code but Java code is alright. I made this mistake in my Pascal code but then i read the problem attentively and found it. import java.io.*;
import java.util.*;
public class Problem1550 {
/**
* @param args
*/
public static void main(String[] args)
throws IOException
{
Scanner in=new Scanner(System.in);
//Scanner in=new Scanner(new File("input.txt"));
PrintWriter out=new PrintWriter(System.out);
double h,w,x,y,r;
h=in.nextDouble();
w=in.nextDouble();
x=in.nextDouble();
y=in.nextDouble();
r=in.nextDouble();
x=Math.abs(x);
y=Math.abs(y);
if(y>x)x=y;
w=h*w*w/3-(Math.PI*r*r*(h*(w/2-x)/(w/2)));
out.println(Double.toString(w));
out.flush();
}
} Your solution is not right. I use out.printf(Locale.US,"%.4f",(piramideVolume-cylindricalSegmentVolume)); to get AC! In Santa's code above, change
cin>>w>>h
to
cin>>h>>w
will be OK.
That's really a small but serious bug. | | WA3 - have you some tests? Is this formula right? | Santa (Volgograd SU ) | 1550. Пирамида декана 3 | 12 ноя 2007 01:53 | 1 | double res = w*w*h/3-h*3.14159265*r*r*(w-2*fabs((((y >= x && y >= -x) || (y < x && y < -x)) ? y : x)))/w; | | HELP | Caesar_KZ | 1550. Пирамида декана 3 | 16 окт 2007 21:56 | 6 | HELP Caesar_KZ 21 апр 2007 13:59 The task is to find a volume of Piramid - volume of cylindr ? CAn you tell me the FORMULA? Re: HELP Kollekcioner2007 21 июн 2007 02:29 It is very easy)))
double res = sqr(w)*h/3-h*pi*sqr(r)*(w-2*fabs((((y >= x && y >= -x) || (y < x && y < -x)) ? y : x)))/w; What procedure fabs does? abs (absolute value) for float. How can you solve it so easy? It is very easy)))
double res = sqr(w)*h/3-h*pi*sqr(r)*(w-2*fabs((((y >= x && y >= -x) || (y < x && y < -x)) ? y : x)))/w; Why is minus? ..w-2*fabs.. | | WA #7 | tikka | 1550. Пирамида декана 3 | 11 окт 2007 03:07 | 1 | WA #7 tikka 11 окт 2007 03:07 Can you give me some test data? | | Need prompting!! | AB&B | 1550. Пирамида декана 3 | 30 июн 2007 14:22 | 2 | I just finding volume of the pyramid and deducting volume of truncated cylinder, but getting WA (4 test). Can anyone to give me a prompting (not solving :)), please? I found mistake! I took PI=3.1415926535 instead 3.14159 and get AC :) | | admins or other students | Bogdan A. Stoica [fireatmyself] | 1550. Пирамида декана 3 | 30 май 2007 22:18 | 3 | Hello.
I know this topic hasn't any connection with problem 1550, but it is the only way to post my request.
I am interested if there's a way to get the "Tuymaada", Yakutsk (I'm sorry if I did not spell it right) task from 2000 to 2006 (at computer science, of course). I would be very grateful if someone could help me with this problem. My email is fireatmyself@yahoo.com.
Thank you very much,
Bogdan A. Stoica
Edited by author 30.05.2007 22:16 I've got the trace of 2000, 2001 and 2002 subjects. Only need from 2003 to 2006.
Thanks again :) | | TEST DATA | Caesar_KZ | 1550. Пирамида декана 3 | 21 апр 2007 16:41 | 1 | CAn You give me 2 test. I have WA test #2. |
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