SPOJ.com - Problem MADODDSUM

MADODDSUM - Easy Odd Sum

Hablu likes odd numbers a lot. So he wants the sum of all odd numbers in range [a, b]. That is, find the sum of all odd numbers i such that (a ≤ i ≤ b). Seems easy right? Because it is.

Input

The first and only line will contain 2 integers a, b where (0 ≤ a ≤ 10⁸) and (0 ≤ b ≤ 10⁸).

Output

In one line, output the value of the sum

Example

Input:
0 9

Output:
25

Submit solution!

Added by:	Ruhan Habib
Date:	2015-11-05
Time limit:	0.5s-1s
Source limit:	50000B
Memory limit:	1536MB
Cluster:	Cube (Intel G860)
Languages:	All except: ASM64 GOSU JS-MONKEY
Resource:	Me?

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2021-01-28 16:29:47
@kass_97 plz help, idk how to use spoj toolkit. i did everything right but its showing wrong
problem EASY ODD SUM

2020-10-01 09:31:34
this is addition of two large integer sum.BIG INTEGER WILL BE USED.

2020-06-22 19:43:47
ac in one go!! use unsigned long long int and take range(a,b]

2020-01-23 18:16:08
I am not sure what SPOJ is trying to tell me,I see it find error of some kind,even thou I believe that code works-but works for me,on my computer-when I submit it it says error and details reveal this:
x86_64-linux-gnu-gcc-8 -c -pipe -O2 test.adb
test.adb:1:01: compilation unit expected
test.adb:6:19: missing string quote
test.adb:10:15: missing string quote
test.adb:12:15: missing string quote
x86_64-linux-gnu-gnatmake-8: "test.adb" compilation error

2018-12-19 10:29:59
very simple!!!

2018-08-22 07:11:39
yes the range should be (a,b]. the question is wrong ...please change it

2018-04-13 17:29:30
My output is exactly same but it's showing wrong answer.
Can anyone please help?

2018-03-16 18:08:02
vedranab: Nothing, your approach is.

https://hr.wikipedia.org/wiki/Aritmeti%C4%8Dki_niz

2018-03-16 10:17:20
What is wrong with programming in Phyton?

2017-12-23 07:31:29
dont forget to look at range ,a nd b can be even too and u have to make them odd and use simple ap formula for summation and dont forger unsigned long long int