EGYPIZZA  Pizza
Abotrika is having a party because his team won the African cup so he is inviting his friends to eat some pizza. Unfortunately, his friends can't eat an entire pizza but all of them know exactly how much pizza they can eat and insist on getting the exact amount of pizza but Abotrika eats one complete pizza and all of them wants his amount of pizza in one slice. Their requests break down to three different pizza sliceseither one quarter or a half or three quarters of pizza.
Write a program that will help Abotrika to find out what is the minimal number of pizzas he has to order so that everyone gets exact amount of pizza they want.
Input
First line contains an integer N, 0 ≤ N ≤ 10 000, the number of friends. In each of next N lines there is amount of pizza that each of Abotrika's friends wants to eat,that is the fraction 1/4, 1/2 or 3/4.
Output
In the first and only line you should write the minimal number of pizzas Abotrika has to order don't forget to order one complete pizza for Abotrika.
Example 1
Input: 3 1/2 3/4 3/4 Output: 4
Example 2
Input: 5 1/2 3/4 1/2 1/4 1/4 Output: 4
hide comments
ABHISHEK MANGAL:
20140212 12:23:33
In my first attempt !!


RAJAT SINGH:
20140204 19:12:13
uffff.....got AC in first attempt good one ........ 

Shadow_Walker:
20140203 14:42:00
The key is to be patient n carefully consider all the possible cases ...confusing newline n Haste caused me 10 WA..phew! 

baraba:
20140121 12:24:12
weak tests... 

New_Bullet:
20140106 20:59:07
Seriously a very good problem! Enjoyed solving it :)@ROHIT KUMAR's comment was really useful & hence i repeat... "all of them wants his amount of pizza in one slice" ! That's the only catch in the problem! 

swagnik dutta:
20131228 11:49:55
will abotrika prefer to eat one whole(uncut) pizza or she would prefer to eat pieces like(3/4 and 1/4),(1/2 and 1/2) etc? 

Python:
20131223 16:56:29
9th case :D 

Martijn Muijsers:
20131018 15:08:08
@Satyaki I had that too. Turned out I made a mistake first, but had to use the logic *Number of half pizzas % 2 = 1 => two less quarter pizzas to process later* 

Satyaki Upadhyay:
20130911 19:47:19
i keep getting WA after running(9)...


abhiruchi:
20130903 08:19:03
ac :D my 50th!! 
Added by:  Kawmia Institutes 
Date:  20100818 
Time limit:  0.204s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ASM64 BF LISP sbcl LISP clisp JSRHINO LUA OBJC PHP VB.NET 
Resource:  Croatian Highschool Competitions in Informatics 2004 