решить по информатике

1)tut kazhdii simvol zanimaet 1 bait(tak imeem bukvi alfavita( soobshenie s uchetom probela zanimaet 10 bait.

2)tut kazhdii simvol zanimaet 1 bait(tak ispol'zovani znaki + i - pmimo 0 i 1);

  soobshenie zanimaet 11 bait.

3)analogichno 15 bait.

var a,b,c,d,x,res: integer;

begin

readln(x);

a: =x div 1000;

b: =x mod 10;

c: =x div 100 mod 10;

d: =x mod 100 div 10;

res: =a+b+c+d;

writeln(res);

readln;

end.