program t5p4n2;

var n,a,b,c,d,m: integer;

begin

writeln ('vvedit chislo');

readln (n);

writeln ('vvedit chislo yake treba vilychutu');

readln (a);

m:=0;

d:=1;

repeat

c:=n mod 10;

if c<>a then

begin

m:=m+c*d;

d:=d*10;

end;

n:=n div 10;

until n=0;

writeln (m);

readln

end.