program slatkisi;
var s1,s2:string;
    c,k:integer;
    a,b:longint;
begin
readln(s1);
readln(k);
val (s1,a);
if k=1 then b:=(a div 10)*10
else if k=2 then b:=(a div 100)*100
else if k=3 then b:=(a div 1000)*1000
else if k=4 then b:=(a div 10000)*10000
else if k=5 then b:=(a div 100000)*100000
else if k=6 then b:=(a div 1000000)*1000000
else if k=7 then b:=(a div 10000000)*10000000
else if k=8 then b:=(a div 100000000)*100000000
else if k=9 then b:=(a div 1000000000)*100000000;
if b=10 then b:=b*2
else if b=100 then b:=b*2
else if b=1000 then b:=b*2
else if b=10000 then b:=b*2
else if b=100000 then b:=b*2
else if b=1000000 then b:=b*2
else if b=10000000 then b:=b*2
else if b=100000000 then b:=b*2
else if b=1000000000 then b:=b*2;
if b>1000000000 then b:=b+10;
writeln(b);
end.