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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.


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.


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



Example 2



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Thomas Lehmann: 2012-02-15 19:20:39

The second example I can understand:
1/2 + 1/2 = 1
3/4 + 1/4 = 1
So you have 2 + 1/4 but you need 3 pizzas
and one additional for Abotrika -> Example says 4 -> fine!

The first one I don't understand:
1/2 + 3/4 + 3/4 = 2
So I take 2 and one for Abotrika, which is 3
but the example says 4, why?

Ahhh ... a minute later ... (sorry) ... I got it.

Last edit: 2012-02-15 19:22:41
saket diwakar: 2012-01-06 05:56:49

getting again and again wrong answer..can anyone please give me any case that i m missing?????

Prakhar Jain: 2011-12-01 12:47:36

print just a new line after your answer...

Kunal Kapadia: 2011-07-08 08:57:05

Juzz use scanf("%d/%d", &a, &b);
and ur mistake is that in competition test cases they were not adding 1 pizza for Abotrika...whereas here u need to do that.. so juzz +1 to ur soln

DJ: 2011-05-22 18:01:39

For some weird reason, I keep getting SIGSEGV (Run time error). The program is yielding right results for all test cases [including the ones provided at]
Output + Code : [link to the source was here]
Please help!

Edit by kokosek: If You have such problem try asking on forum and read point 1!

Last edit: 2011-10-06 18:31:14
Kunal Kapadia: 2011-03-21 18:13:59

where all we need to put the newline its not clear in the Q??
plzz reply those who got AC..

billu: 2011-02-03 02:36:49

plz take care of the new line ,and checking for minimality is a must

Karl-Aksel Puulmann: 2010-09-28 15:28:54

Leppy said on the forums: Using getchar leads to many wrong answers. The end of line may or may not be \r\n which is two characters. Just use scanf instead and pull the 0 and 2 character.

Look into this if you are getting WA yet think your approach is right.

Mohamed Maher: 2010-09-02 15:54:53

the solutions rejudged

Added by:Kawmia Institutes
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