%{
%}
%token PLUS TIMES INT CR RPAREN LPAREN

%%
lines	:	lines line
	|	line
	;
line	:	expr CR 	
	;
expr	:	expr PLUS term 	
	|	term
	;
term	:	term TIMES factor
	|	factor
	;
factor	:	LPAREN expr RPAREN
	|	INT
	;
%%