program Project2;
 
uses
  SysUtils,
  Math;
var
  a, b, c, d, x, y, z : Real;
  v : Real;
begin
  { TODO -oUser -cConsole Main : Insert code here }
  Write('a='); Readln(a);
  Write('b='); Readln(b);
  Write('c='); Readln(c);
  Write('d='); Readln(d);
  Write('x='); Readln(x);
  Write('y='); Readln(y);
  Write('z='); Readln(z);
begin
  if ((sqr(c) <= (sqr(x) + sqr(y) + sqr(z))) and
     ((sqr(x) + sqr(y) + sqr(z)) <= sqr(d)) ) then begin
      V := (a / (max(x , max(y,z))));
      writeln('Основна гілка першого if');
  end else begin
    writeln('Побічна гілка першого if');
  end;
 
   end;
    begin
      if ((sqr(x) + sqr(y) + sqr(z)) <= sqr(c) ) then
          V := (b / (min(x , min(y,z))))
      else
          V := (a + b)/2;
    end;
    Write(V);
    Readln;
end.
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