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POWFIB - Fibo and non fibo |
The problem is simple.
Find (a^b) % MOD
where,
a = Nth non-fibonacci number
b = (Nth fibonacci number) % MOD
MOD = 10^9+7
Consider fibonacci series as 1,1,2,3,....
Note: It is guaranteed that Nth non-fibonacci number will always be less than MOD value for every value of N used.
Input
First line contains T, the number of test cases.
Each next T lines contains a number N.
Output
Print T lines of output where each line corresponds to the required answer.
Announcement: Constraints are updated. Sorry for inconvenience occurred.
Example
Input: 3 3 2 1 Output: 49 6 4
Explanation
For N=3 : 3rd non fibo number = 7, 3rd fibo number = 2. ans = (7^2) %MOD = 49
For N=2 : 2nd non fibo number = 6, 2nd fibo number = 1. ans = (6^1) %MOD = 6
For N=1 : 1st non fibo number = 4, 1st fibo number = 1. ans = (4^1) %MOD = 4
For N=1 : 1st non fibo number = 4, 1st fibo number = 1. ans = (4^1) %MOD = 4
Constraints
1<=T<=100000
1<=N<=9*10^8
Note: Test cases have been updated and constraints are changed. Those who get TLE or WA are suggested to resubmit. GOOD LUCK there.
Added by: | ivar.raknahs |
Date: | 2015-07-15 |
Time limit: | 1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 JS-MONKEY |
Resource: | OWN |
hide comments
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2015-07-19 13:34:54 harshit sharma
giving w.a after 9 judge... any tricky case |
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2015-07-19 12:47:40 [Lakshman]
@Mohib Your solution is no more faster, see the updated list. Best is .17s EDIT1:: now .06s Last edit: 2015-07-23 20:52:57 |
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2015-07-19 08:19:31 :.Mohib.:
@Lakshman awesome speed!! Congratulations...!! Last edit: 2015-07-19 20:50:18 |
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2015-07-18 18:01:09 [Lakshman]
@All problem is ready http://www.spoj.com/problems/POWFIB2/ Have fun :) |
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2015-07-18 15:01:19 Kata
@luckymastermin : I agree with you. And for the new problem I suggest that a, b <= 1e18. For more interesting, the value to calculate is (non_fib ^ fib) % mod, not (non_fib ^ (fib % mod)) % mod with mod is a prime <= 1e18 |
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2015-07-18 14:19:20 [Lakshman]
@wisfaq I mean with hard constraints we can get more elegant solution. I will prepare slightly different from this one. -reply-> cool. That will be great! Last edit: 2015-07-18 16:16:06 |
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2015-07-18 11:47:10 hrishabh
Finally!! Green :) |
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2015-07-17 21:44:16 wisfaq
@Lakshman: would that be that much harder then? Last edit: 2015-07-17 21:45:21 |
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2015-07-17 15:16:26 [Lakshman]
As this seems to easy we can create another version of this with higher constraints with n <=1e16 ~ 1e18 what other thinks. |
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2015-07-16 19:48:59 eightnoteight
nice one! and easy one as n <= 10**7 |