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 slices-either 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

Added by:Kawmia Institutes
Date:2010-08-18
Time limit:0.204s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ASM64 BF LISP sbcl LISP clisp JS-RHINO LUA OBJC PHP VB.NET
Resource:Croatian Highschool Competitions in Informatics 2004

hide comments
2017-07-06 20:17:57
use bufferreader for java..
2017-06-19 10:41:02
After 2WA got AC

Consider
3/4+1/4=1
1/2+1/4+1/4=1


First store all the counts ct1 for 1/2 , ct2 for 3/4 ,ct3 for 1/4
This way you will solve this easily.

This Test case is posted by many people and is misleading O/p->6
12
3/4
3/4
3/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/2
1/2

o/p=6
Sometimes even spojtoolkit can be Wrong XD.
2017-06-14 08:22:54
easy logic :)
cut pizza... haha
2017-06-10 18:06:04
how is 4 the answer for the first test case they've given? It should be three right?
1 (for Abotrika) + 1/2 + 3/4 + 3/4 = 1 + 2/4 + 3/4 + 3/4 = 1 + 8/4 = 3 right?
Please help ...
2017-06-03 16:50:43
For case 9: check
37
1/2
1/2
1/4
1/2
3/4
1/4
1/2
3/4
3/4
1/4
1/4
1/2
3/4
3/4
1/2
1/4
3/4
1/4
1/2
3/4
1/2
1/2
1/2
3/4
1/4
1/4
1/4
1/4
1/4
3/4
1/4
1/4
1/4
3/4
1/4
1/4
1/4

Output: 18
2017-05-30 09:07:32
20
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/4
1/2
1/2
1/2
1/2
1/2
1/2
3/4
3/4
3/4
3/4
3/4
I am getting 10 o/p by my accepted code but 11 is o/p show in spoj toolkit!! I think answer 10 is correct if you simulate it practically..


Last edit: 2017-05-30 09:08:49
2017-03-15 12:22:27
impl/concept = easy/easy
2017-03-04 14:43:41
my 50th
thanks for comments
2017-02-23 09:40:03
Finally AC, complicated problem statement
2017-02-17 08:13:58
AC in one go ^ ^
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