why wa in test 1?
program t1012;
var
a,b,n,k,i,j,l,p,q,c,d,o:longint;
f,h:array [0..10000] of string;
s,x,m:string;
begin
readln(n);
readln(k);
str(k-1,m);
f[0]:=m;
val(f[0],a,b);
str(k*a,m);
f[1]:=m;l:=1;
for i:=2 to n do
begin
a:=length(f[i-1]);
b:=length(f[i-2]);
if a>b then d:=a else d:=b;
x:=f[i-1];m:=f[i-2];
if d=a then
for j:=a-b downto l do
m:=concat('0',m);
if d=b then
for j:=b-a downto l do
x:=concat('0',x);
for j:=d downto l do
begin
val(x[j],p,o);
val(m[j],q,o);
b:=p+q+c;
c:=b div 10;
q:=b mod 10;
str(q,h[j]);
if j=l then if c>0 then begin dec(l);str(c,h[l]); end;
p:=0;q:=0;
end;
c:=0;
for j:=l to d do
s:=concat(s,h[j]);
l:=1;
for j:=d downto l do
begin
val(s[j],p,o);
b:=p*9+c;
c:=b div 10;
q:=b mod 10;
str(q,h[j]);
if j=l then if c>0 then begin dec(l);str(c,h[l]); end;
p:=0;q:=0;
end;
c:=0;
s:='';
for j:=l to d do
s:=concat(s,h[j]);
l:=1;
f[i]:=s;
s:='';
end;
writeln(f[n-1]);
end.