GPACALC - Calculate your GPA
Design a calculator to calculate your GPA. Possible grades are S, A, B, C, D and E. S corresponds to 10 credits, A to 9, B to 8, C to 7, D to 6 and E to 5. There are n subjects. Each subject has a number of credits and the grade obtained by the student.
GPA of the student is the summation of [[grades obtained multiplied by the number of credits for each subject]] divided by the total number of credits. For example, if input is n = 3 and three subjects have credits 3, 4 and 5. A student has obtained grade S, A and B respectively, then GPA = (3*10 + 4*9 + 5*8)/(3+4+5)
Input
First line consists of t, the number of test cases (1 <= t <= 20). Each test case starts with n, the number of subjects (1 <= n <= 16). The next n lines consist of credits for that subject followed by grade obtained by the student (1 <= credits <= 10 and grade will be one among S, A, B, C, D and E)
Output
For each test case, print the GPA of the student rounded off to two decimal places.
Example
Input: 1 12 4 D 1 E 1 S 3 D 1 E 2 A 4 A 4 A 3 C 1 C 1 B 2 D Output: 7.41
hide comments
Prashant Kiran:
2013-12-21 20:24:10
Anyone what is th eoutput format
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akulsareen:
2013-12-21 20:17:38
what are the standard rounding off rules? |
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Bhavik:
2013-12-21 20:17:28
what does rounding off means here??
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Prashant Kiran:
2013-12-21 20:03:20
Works on my pc but gives WA after running(2)...please check input output...and do we have to print output just after evry test case or all at once? |
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Jayant Dalmia:
2013-12-21 19:59:03
There has to be some mistake in the question details. |
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suryadev:
2013-12-21 19:31:19
pls do the rounding off in double carefully! |
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Nick:
2013-12-21 19:08:55
yes, it's correct Last edit: 2013-12-21 19:09:04 |
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Sushant Gupta:
2013-12-21 18:44:51
provide some more test cases... giving correct results for me but showing wrong answer |
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Pandian:
2013-12-21 18:19:15
@udhayakumar : Nope. The question and ip, op is correct. Last edit: 2013-12-21 18:28:14 |
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S.Udhayakumar:
2013-12-21 17:35:48
No body got the answer correct for such a simple question.Something wrng with this question.Please check the ip and output.My solution works localy fails in spoj server. |
Added by: | Pandian |
Date: | 2013-12-19 |
Time limit: | 1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All |
Resource: | Own |