var x,y,d:real;
i:integer;
label 1,2,3;
begin
write('x=');
read(x);
write('y=');
read(y);
if x>0 then goto 1 else goto 2;
1: for i:=1 to 5 do begin
 d:=d+y+cos(x);
 end;
 goto 3;
2:d:=1;
 for i:=2 to 10 do begin
 d:=d*(y-x);
 end;
 3: writeln(d:2:3);
 end.