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
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!! 

Aswin Murugesh:
20130827 12:11:57
AC after 7 WA :) 

californiagurl:
20130825 08:02:55
i don't understand why i'm getting WA....are those '\n's before each line of input?if so, how to take care of it?


(Tjandra Satria Gunawan)(æ›¾æ¯…æ˜†):
20130822 03:37:22
my greedy program will fail for this case:


ROHIT KUMAR:
20130808 07:22:11
"AC" in a go :)


sumanth kumar:
20130808 06:58:27
Last edit: 20130808 07:01:36 

Prakhar Gupta:
20130804 14:24:18
finally....AC 

chk:
20130730 08:38:34
AC in one go:) 
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 