it's my code:
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{deleted}
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Edited by author 09.12.2006 21:18

i find my mistake

#include<iostream>
#include<math.h>

int main()
{
 using namespace std;

 long j=1,k,R,L;
 double s,pi=3.1415926535;
  cin>>L>>R;

   if(L>=2*R)
    s=pi*R*R;
 else
     if (R>(L*sqrt(2.0))/2) s=L*L;
else
 s=2*R*R*atan((L*L-2*R*R)/(L*sqrt((double) 4*R*R-L*L)))+L*sqrt((double) 4*R*R-L*L);

k=s;

while(k>10)
   {
   k=k/10;
   j++;
   }
   cout.precision( 3+j );
   cout << noshowpoint << s << endl;

 return 0;
}


Помоги мне . . .

Edited by author 10.12.2006 01:07

program _1084;

{$APPTYPE CONSOLE}

uses
  SysUtils,math;
const
 pi=3.1415926535;
Var
x,l,s,c:real;
begin
  Readln(x,l);
  X:=x/2;
  c:=x*sqrt(2);
  if l>=c then s:=4*x*x;
  if l<=x then s:=pi*l*l;
  if not((l>=c)or(l<=x)) then
   Begin
     s:=8*(x*sqrt(l*l-x*x)/2+l*l/2*(pi/4-arccos(x/l)))
   end;
  writeln(s:0:3);
end.

Edited by author 24.11.2007 16:45

Edited by author 24.11.2007 16:45