Little Shino and the Fibonacci series
Practice
3.9 (29 votes)
Mathematics
Easy Medium
Mathematics
Mathamatics
Problem
91% Success 6349 Attempts 30 Points 1s Time Limit 256MB Memory 1024 KB Max Code
Little Shino loves to play with numbers. She just came to know about Fibonacci Series.
Fibonacci Series is a series of number such that
\(Fib(1) = 0\)
\(Fib(2) = 1\)
\(Fib(x) = Fib(x-1) + Fib(x-2)\;where\;2 \lt x\)
Soon Little Shino realized that Fibonacci series grows very fast. So she just wants the sum of last 4 digits of the \(Fib(x)\) where \(l \le x \le r\) (mod \(10^9 + 7\)) . Can you help her.
Input:
First line of each test case contains one integer, T, number of test cases.
Each test case contains two integer, l and r.
Output:
Print the sum of last 4 digits of the \(Fib(x)\) where \(l \le x \le r\) (mod \(10^9 + 7\)).
Constraints:
\(1 \le T \le 10^5\)
\(1 \le l \le r \le 10^{18}\)
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