program Tree;

{$APPTYPE CONSOLE}

var n,m,v:real;
f1,f2:text;
begin
assign(f1,'tree.dat');
reset(f1);
assign(f2,'tree.sol');
rewrite(f2);

readln(f1,n,m);
if (n<2) and (n>100) then writeln(f2,'mismatch');
if (m<0) and (m>1000) then writeln(f2,'mismatch');
  v:=(n+m)-1;

close(f1);

writeln(f2,v:6:2);
close(f2);
end.