#include<stdio.h>
#include<stdlib.h>

#define LETTER 256

int symbol;
char lexVal;
int yylex();

typedef struct _node
{
	char key;
	struct _node* left;
	struct _node* right;
}node;

node* E();
node* T();
node* F();
node* P();
void error(){
	printf("eroare de sintaxa");
	exit(0);
}

void next_symbol()
{
	symbol = yylex();
}

node* E()
{
	node* resultT=T();
	if(symbol == '|')
	{
		next_symbol();
		node* result = (node*)malloc(sizeof(node));
		result->key = '|';
		result->left=resultT;
		result->right =E();
		return result;
	}
	if(symbol == '\n'||symbol==')')
		return resultT;
	error();

}


int followF(){ return firstT()||followT();}
node* T(){
	node* resultF;
	resultF = F();
	if(symbol=='(' || symbol==LETTER)
	{
		node* result;
		result = (node*)malloc(sizeof(node));

		return resultT;


		result->left=resultF;
		result->right =T();
		return result;
	}

		return resultF;

}

node* F(){
	node* resultP=P();
	if (symbol == '*'){
		next_symbol();
		node* result = (node*)malloc(sizeof(node));
		result->key = '*';
		result->left=resultP;
		result->right =NULL;
		return result;

	}

		return resultP;


}


node* P(){
	node* val;
	if (symbol==LETTER) {
	val=(node*)malloc(sizeof(node));
	val->key = lexval;
	val->left=NULL;
	val->right=NULL;
	next_symbol();
	return val;
	}
	else if (symbol=='('){
		next_symbol();
		val = E();
		if (symbol==')') next_symbol();
		else error();
		return val;
	} else error();
}

parser(){
	printf("%d\n", E()->key);
	if (symbol!='\n') error();
}

main(){
	next_symbol();
	while (symbol!=0){
		parser();
	next_symbol();
	}
}