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
Yo Yo Honey Singh: 2012-12-16 13:55:10

after running(9) it gives wrong ans .... any idea???

Arika Saputro: 2012-11-11 03:31:52

what the output if the input 1/3 1/3 1/2
whether the output still appear if input not 1/2, 1/4 or 3/4?

Maxim Bogoyavlenskiy: 2012-10-03 13:03:25

my head had exploded:D

Last edit: 2012-10-03 13:04:15
Sanket Kumar: 2012-09-28 18:13:31

getting correct answers for all test cases and judges(<7) but gets wa for 8th and 9th judges

jai_334: 2012-09-27 07:00:05

please provide more test cases

ahmed nasser : 2012-09-13 20:47:42

wa and don't now why
more test cases !!!!

kamalesh: 2012-08-31 12:46:46

after 5 WA i got AC!!!

code warrior: 2012-08-11 10:36:45

input
5
1/4
3/4
3/4
1/2
3/4
output
5

abc: 2012-08-03 18:00:27

anyone can tell no. of lines between two consecutive inputs ?

Bijoy Prakash: 2012-08-01 16:01:48

the problem statement is a bit confusing.
Anyway this is the modified one if its useful for someone:
1 whole pizza for Abotrika and his friends might want 1/2, 1/4 or 3/4 pizzas.
But each friend wants his piece of pizza in the same pizza. i.e. a person needing 3/4 pizza would want it in one pizza and not 1/2 from 1 and 1/4 from another.
hope i didn't confuse more :P


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