language: Pascal (fpc) (fpc 2.2.0)
date: 103 days 23 hours ago
link:
visibility: public 
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program pro10(input,output);
var n,i,j,t:integer;
    a: array[1..100000] of integer;
begin
 readln(n);
 j:=0;
 for i:=1 to n do
  read(a[i]);
 readln;
 i := 2;
 while (i<=n) do
  begin
   if ( (a[i-1]>0) and (a[i]<0) ) then
    begin
     j := j+1;
     t:= a[i-1];
     a[i-1] := a[i];
     a[i] := t;
    end
   else
   i := i+1;
  end;
 writeln(j);
 writeln(a[1]);
 writeln(a[n]);
 {for i:= 1 to n do
  write(a[i]);
 writeln;}
end.