Beautiful Sequence
Practice
4.4 (5 votes)
Mathematics
Hard
Modular arithmetic
Number theory
Problem
21% Success 92 Attempts 50 Points 2s Time Limit 512MB Memory 1024 KB Max Code

A sequence is beautiful if the number of times each number appears in that sequence is divisible by \(5\). For example, \((1, 1, 1, 1, 1, 3, 3, 3, 3, 3)\) is beautiful while \((1, 1, 1, 1, 1, 3)\) is not.

You are given \(Q\) queries, each comprises two integers \(N, M\). You must count the number of beautiful sequences of \(N\) integers where each element ranges from \(1\) to \(M\). (Two sequences are different if there exists a position where elements in two sequences are different.)

Input format

  • First line: Integer \(Q\) denoting the number of queries
  • Each of the \(Q\) following lines: Two space-separated integers \(N, M\)

Output format

  • For each query, print the answer to the modulo \(5011\) in a single line.

Constraints

\(1 \le Q \le 1000\)

\(1 \le N \le 10^{18}\)

\(1 \le M \le 10^{18}\)

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