var a,b,c:longint;
begin
read(a,b,c);
if (a>=16)and(a<=19)and(b>=50)and(b<=80)and(c>=165)and(c<=185) then write('Y')
else write('N');
end.

/**************************************************************
	Problem: 1661
	User: admin
	Language: Pascal
	Result: Wrong Answer
****************************************************************/