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
2014-12-22 19:59:17 Anvesh Kumar Arrabochu
Just in case you're going wrong in the 9th test case, test for
4
1/4
1/2
1/2
3/4
Correct Ans: 3
Lesson learnt: Don't be too greedy.
2014-12-22 17:54:13 Arnab Mitra
getting WA after 9th case. Any suggestions?
2014-12-17 21:40:12 Aravinth
AnyBody give some more test cases
2014-12-16 04:57:17 Akshat Mathur
Finally AC....after 8 WAs !!

Last edit: 2014-12-16 04:57:51
2014-12-15 19:22:36 Lehar
AC in first go! :D
2014-12-10 18:34:51 jaspreet kaur
finally accepted after 2 WA.nice prob..
2014-12-10 18:04:53 jaspreet kaur
failing on 5th test case..somebody plz help..
2014-12-06 01:30:15 alpha coder
ac in one go !! just try to build complete pizzas first ,using parts available ! :D
2014-11-20 16:45:57 Mayank Ladia
isnt't 1st output wrong
2014-10-31 11:08:12 Tim Wargon
I was getting wrong answers in the 9th case... Reason - was using strings to get input... use scanf("%d/%d") to get the input. Absolute time waster... :(

Last edit: 2014-10-31 11:08:35
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