EGYPIZZA - Pizza

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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

hide comments
tjain1999: 2015-07-01 16:10:06

@Aman Agarwal
Thanks for your help !! :D

Manishi Goel: 2015-06-26 20:16:07

Take care of the order of testing cases and use scanf(%d/%d,); instead of using strings
:D

Last edit: 2015-06-26 20:16:34
tjain1999: 2015-06-22 13:55:40

http://www.spoj.com/submit/EGYPIZZA/id=14512574
Please can anybody tell my mistake or at least give a hint!!
I tried every test case I got and my program answered correctly

Aman Agarwal: 2015-06-22 10:25:53

ahh..good question..just concentrate on order of checking

SangKuan: 2015-06-16 13:04:19

remeber initialize variable ,get 2 wa...

hadeus_20: 2015-06-14 18:21:18

@Anvesh you said output for
1/4..1/2..1/2..3/4 should be 4 ..how come?
won't the set be like this? : {1},{1/4, 1/2}, {1/2}, {3/4} which implies to four pizzas, why 3 then?(each pair of braces represent one pizza enough to satisfy the subsequent demands)

Akshay Kumar: 2015-06-08 18:21:17

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..
how come 7 is answer of it.. spojtoolkit

---@@@----: 2015-06-05 21:52:06

Good 1... :)
Try this one...
4
1/4
1/4
1/2
3/4
output:
3

Hot-Shot: 2015-06-02 20:14:44

made home again...just try to level pizza to one..solved easily

SRC: 2015-05-31 19:28:21

Daniel Carvalho, output to your data is 4?


Added by:Kawmia Institutes
Date:2010-08-18
Time limit:0.204s
Source limit:50000B
Memory limit:1536MB
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Resource:Croatian Highschool Competitions in Informatics 2004