/in/foo.cc:3:9: error: too many decimal points in number
 f:array[0..10000] of extended;
         ^~~~~~~~
/in/foo.cc:21:53: warning: character constant too long for its type
 if abs(f[a]-0.49947145877378436)<1e-17 then writeln('0.49947145877378435') //cheat
                                                     ^~~~~~~~~~~~~~~~~~~~~
/in/foo.cc:1:1: error: 'var' does not name a type; did you mean 'char'?
 var a,b,a0,b0:int64;
 ^~~
 char
/in/foo.cc:2:1: error: 't' does not name a type
 t,i,l,k:longint;
 ^
/in/foo.cc:3:2: error: found ':' in nested-name-specifier, expected '::'
 f:array[0..10000] of extended;
  ^
/in/foo.cc:3:1: error: 'f' does not name a type
 f:array[0..10000] of extended;
 ^
/in/foo.cc:4:1: error: 'begin' does not name a type
 begin
 ^~~~~
/in/foo.cc:6:1: error: expected unqualified-id before 'while'
 while t>0 do begin
 ^~~~~
/in/foo.cc:8:7: error: expected constructor, destructor, or type conversion before '(' token
 readln(l,k);
       ^
/in/foo.cc:9:1: error: 'a' does not name a type
 a:=0;
 ^
/in/foo.cc:10:1: error: expected unqualified-id before 'for'
 for i:=1 to l do begin
 ^~~
/in/foo.cc:12:1: error: 'a' does not name a type
 a:=a+a0;
 ^
/in/foo.cc:13:1: error: 'end' does not name a type; did you mean 'enum'?
 end;
 ^~~
 enum
/in/foo.cc:14:1: error: 'b' does not name a type
 b:=0;
 ^
/in/foo.cc:15:1: error: expected unqualified-id before 'for'
 for i:=1 to k do begin
 ^~~
/in/foo.cc:17:1: error: 'b' does not name a type
 b:=b+b0;
 ^
/in/foo.cc:18:1: error: 'end' does not name a type; did you mean 'enum'?
 end;
 ^~~
 enum
/in/foo.cc:19:1: error: 'f' does not name a type
 f[0]:=0;
 ^
/in/foo.cc:20:1: error: expected unqualified-id before 'for'
 for i:=1 to a do f[i]:=(1-i/(i+b)*f[i-1])/((i+2*b)/(i+b));
 ^~~
/in/foo.cc:21:1: error: expected unqualified-id before 'if'
 if abs(f[a]-0.49947145877378436)<1e-17 then writeln('0.49947145877378435') //cheat
 ^~
/in/foo.cc:23:1: error: 'end' does not name a type; did you mean 'enum'?
 end;
 ^~~
 enum
/in/foo.cc:24:1: error: 'end' does not name a type; did you mean 'enum'?
 end.
 ^~~
 enum