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IRECSQRT - Inverse of Recurrence Problem With a Square Root |
Given this recurrence formula (be careful, it's in inverse form):
Given n (0 ≤ n < 264) and m (0 < m < 264), your task is to compute an modulo m.
It's guaranteed that an is always an integer.
Input
First line containing an integer T (0 < T ≤ 5×104), than T cases follow.
For each test case there are two integers n and m, written in one line, separated by a space.
Output
For each test case, output the required answer: an modulo m.
Example
Input: 10 0 10 1 10 2 10 3 10 10 10 100 100 1000 1000 10000 10000 100000 100000 9876543210123456789 1234567890987654321 Output: 1 2 5 5 5 51 251 6251 6251 657422418465782775
Time limit ~7x My program speed: Click here to see my submission history and time record for this problem
Added by: | Tjandra Satria Gunawan |
Date: | 2013-03-14 |
Time limit: | 13s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |
Resource: | ONMIPA sel 2013 |
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2013-03-15 06:43:14 (Tjandra Satria Gunawan)(曾毅昆)
This is the first time I made problem with require BigNum operation :-) I hope I can learn faster method for BigNum operation (especially using C language). Took ~12 hours to set this problem. I hope everyone enjoyed this problem, Have Fun! :-D Last edit: 2013-03-15 06:42:57 |
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2013-03-15 06:05:13 [Rampage] Blue.Mary
Pike is so slow comparing to Python 2.7. Ans: Yes PIKE is slower than Python for this problem, I set the time limit so that it has a chance to solve this problem using most slow language. And congratulations, You're the first solver :-D Last edit: 2013-03-15 06:41:18 |