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  1. {$APPTYPE CONSOLE}
  2. {$R-,Q-,O+}
  3.  
  4. uses
  5.   SysUtils, Math;
  6.  
  7. const
  8.   eps = 1e-9;
  9.  
  10. var
  11.   w, n, m, i, j, l, r, mid, ans, k, ans2, x, q, ll, rr, m1, m2: integer;
  12.   a, b: array[0..200001]of extended;
  13.   s, len: extended;
  14.  
  15. function dist(x1, y1, x2, y2: extended): extended;
  16. begin
  17.   result := sqrt( (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2) );
  18. end;
  19.  
  20. function f(k: integer): integer;
  21. begin
  22.   s := dist(a[i], w, b[j], 0) + a[k] - a[i];
  23.  
  24.   l := j;
  25.   r := m + 1;
  26.   while (r - l) > 1 do begin
  27.     mid := (r + l) div 2;
  28.     if len + eps >= (s + b[mid] - b[j] + dist(a[k], w, b[mid], 0)) then
  29.       l := mid
  30.     else
  31.       r := mid;
  32.   end;
  33.  
  34.   mid := l;
  35.   if len + eps >= (s + b[mid] - b[j] + dist(a[k], w, b[mid], 0)) then
  36.     result := k - i + 1 + mid - j + 1
  37.   else
  38.     result := 0;
  39. end;
  40.  
  41. begin
  42.   {reset(input, 'birch.in');
  43.   rewrite(output, 'birch.out');}
  44.  
  45.   read(len, w);
  46.  
  47.   read(n);
  48.   for i := 1 to n do
  49.     read(a[i]);
  50.  
  51.   read(m);
  52.   for i := 1 to m do
  53.     read(b[i]);
  54.  
  55.   ans := 0;
  56.  
  57.   for i := 1 to n do
  58.     for j := 1 to m do begin
  59.       ll := i;
  60.       rr := n + 2;
  61.  
  62.       while (rr - ll) > 2 do begin
  63.         m1 := ll + (rr - ll) div 3;
  64.         m2 := rr - (rr - ll) div 3;
  65.  
  66.         if f(m1) >= f(m2) then
  67.           rr := m2
  68.         else
  69.           ll := m1;
  70.  
  71.       end;
  72.  
  73.       ans := max(ans, f(ll));
  74.       ans := max(ans, f(min(ll + 1, n)));
  75.  
  76.       if ans = n + m then begin
  77.         write(ans);
  78.         exit;
  79.       end;
  80.  
  81.    end;
  82.  
  83.    write(ans);
  84.  
  85.  
  86. end.
  87.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.pas:1: warning: unknown compiler directive `apptype console'
prog.pas:2: warning: directive `{$q-}' not yet implemented
prog.pas:2: warning: ignoring BP directive `{$o+}' which is unnecessary in GPC
prog.pas:1: warning: missing program header
prog.pas:5: error: module/unit interface `SysUtils' could not be imported
stdout 
Standard output is empty
https://ideone.com/JsQhxn
language:
Pascal (gpc 20070904)
created:
11 years ago
visibility:
public

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