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
kkislay20:
20180613 20:15:49


zephyr_96:
20180320 21:09:34
Good question !! 

sinersnvrsleep:
20180211 07:34:07
spoj toolkit is giving wrong answers for 4 (1/4) case 

deepak097:
20180128 21:49:21
AC ! in 1 go 

bani_raheja:
20171228 22:37:30
instead of checking the test cases, just keep in mind that you should maintain pairing up of 1/4 and 3/4 as the highest priority and then proceed onto further cases. 3/4 and 1/2 cannot be paired. 

nessaa_05:
20170726 14:50:33
got me 20 wa :( because of zero and then only ac Last edit: 20170726 14:50:49 

monukumar:
20170706 20:17:57
use bufferreader for java.. 

shauryauppal:
20170619 10:41:02
After 2WA got AC


bsiddhartha:
20170614 08:22:54
easy logic :)


kspoj:
20170610 18:06:04
how is 4 the answer for the first test case they've given? It should be three right?

Added by:  Kawmia Institutes 
Date:  20100818 
Time limit:  0.204s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
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Resource:  Croatian Highschool Competitions in Informatics 2004 