PROGRAM Xoaso;
USES crt;
VAR f1,f2 : TEXT ;
x,max: STRING;
n,k,j,i,maxi : BYTE;
BEGIN
clrscr;
assign(f1,'XOASO.INP');
reset(f1);
assign(f2,'XOASO.OUT');
rewrite(f2);
Readln(f1,x,k);
FOR j:=1 TO k DO
BEGIN
max:=x[1];
FOR i:= 1 TO length(x) DO
IF x[i] > max THEN BEGIN max:= x[i]; maxi:=i; END;
delete(x,maxi,1);
END;
Write(f2,x);
close(f1);
close(f2);
END.