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POWPOW2 - Power with Combinatorics(HARD) |
Your task is to calculate abexp.
- a: provided in input, 0 ≤ a ≤ 105
- b: provided in input, 0 ≤ b ≤ 105
- exp = (nC0)2 + (nC1)2 + (nC2)2 + ... +(nCn)2
- n: provided in input, 0 ≤ n ≤ 105
Note: The output for 00 should be 1.
nCr denotes n choose r.
As the answer can be too large, you need to output modulo 109+7.
Input
The first line of each input file contains number of test cases t (t ≤ 1000).
Then follows a new line.
Then follows t lines, each containing 3 integers, (i.e. a b n in order) each of them separated by a space.
Output
Output contains t lines, ith line contains the answer of the ith test case.
Example
Input: 1 1 1 1 Output: 1
Explanation
In the first test case, the Value of exp is 2, value of 112 is 1, so output is 1.
Note: First try out the tutorial version where limits are low. POWRTU
Click here to see my set of problems at SPOJ.
Added by: | devu |
Date: | 2012-07-14 |
Time limit: | 0.100s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |
Resource: | Utkarsh Lath |
hide comments
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2021-05-05 06:55:23 [Lakshman]
@parth2002 Yes. 754901378 is correct answer |
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2021-05-04 19:20:57
Can anyone confirm if the output for input 1 100000 100000 100000 is 754901378? |
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2021-02-14 10:35:27
These cases were enough to get accepted: a^0 = 1 C(0,0)=1. |
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2020-04-10 03:26:49
gud question |
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2020-01-26 10:36:24
Please don't refer to the github code , for checking your code.... Because it contain wrong answers.... ex. for test case 10 10 10 it gives...669572223 but actual answer is ...330427784 Last edit: 2020-01-26 11:48:26 |
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2018-05-09 06:27:15
what is the output for: 1 2 2 2 |
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2017-02-10 19:09:38 Francky
Now doable using Python3. |
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2017-01-24 15:14:05
can't pass test # 8 , tried all base case with 0^0; plz.. can anybody help me ?? |
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2016-07-10 19:27:26
for those struggling with test case 7 or 8 and getting everything correct, then most probably u won't get what needs to be done by debuging , just try to make ur code more stronger and read the comments. |
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2016-07-10 18:50:30
@Francky please all the tell the answer of your proposed testcases ? |