var
x,y: real
begin
readln(x,y);
if (x> 0) and (y> 0) and (sqr(x)+sqr(y)< =1) then writeln('yes')
else writeln('no')
end.
var
x,y: real
begin
readln(x,y);
if (x> 0) and (y> 0) and (sqr(x)+sqr(y)< =1) then writeln('yes')
else writeln('no')
end.