program TABLE;

{$APPTYPE CONSOLE}

var s,a1,a2,a3:int64;
f:array[0..1000,0..1000] of int64;
max,j,n,m,i:integer;
begin
assign(input,'TABLE.dat');
reset(input);
assign(output,'TABLE.sol');
rewrite(output);

readln(n,m);

f[1,1]:=1;
f[1,2]:=1;
for i:=3 to m do
f[1,i]:=f[1,i-1]+f[1,i-2];

f[2,1]:=1;
for i:=3 to n do
f[i,1]:=f[i-1,1]+f[i-2,1];

  


for i:=2 to n do
 for j:=2 to m do
f[i,j]:=f[i-1,j]+f[i-2,j]+f[i,j-1]+f[i,j-2];



writeln(f[n,m]);
close(input);
close(output);

end.