var a:array[1..20000000] of longint;  
       b:array[0..22] of longint;  
       st,dr,z,i,x,y,n,max,j:longint;  
       f,g:text;  
      
   procedure fill;  
   var poz:longint;  
   begin  
     poz:=1;  
     for j:=b[0] downto 2 do begin  
     poz:=poz shl 1+b[j];  
     a[poz]:=-1;  
     end;  
     poz:=poz shl 1+b[1];  
     a[poz]:=i;  
    end;  
     
   procedure caut;  
   var poz,i:longint;  
   begin  
     poz:=1;  
     for i:=b[0] downto 1 do begin  
     if a[(poz shl 1)+(b[i] xor 1)]<>0 then begin  
     y:=y shl 1+b[i] xor 1;  
     poz:=(poz shl 1)+(b[i] xor 1);  
     end  
     else begin  
      y:=y shl 1+b[i];  
      poz:=poz shl 1+b[i];  
     end;  
    end;  
    z:=a[poz];  
    end;  
     
   begin  
    assign(f,'xormax.in'); reset(f);  
    assign(g,'xormax.out'); rewrite(g);  
    read(f,n);  
    read(f,x);  
    y:=x; b[0]:=21; i:=1;  
    for j:=1 to b[0] do begin  
     b[j]:=y and 1;  
     y:=y shr 1;  
    end;  
    max:=x; st:=1; dr:=1;  
    fill;  
    for i:=2 to n do begin  
     read(f,y);  
     x:=x xor y;  
    y:=x;  
     for j:=1 to b[0] do begin  
      b[j]:=y and 1;  
      y:=y shr 1;  
     end;  
     y:=0;  
     caut;  
     if x xor y>max then begin  
      max:=x xor y;  
      st:=z;  
      dr:=i;  
     end;  
     fill;  
    end;  
    if st=dr then  
     writeln(g,max,' ',st,' ',dr)  
    else  
     writeln(g,max,' ',st+1,' ',dr);  
    close(f); close(g);  
  end.