Practice · 1 of 3
Modular Inverses
CHALLENGE
Difficulty: advanced+25 XP
**Problem.** Line 1: q. Each line: a m (m prime, 1 <= a < m). Print a^(-1) mod m. **Constraints:** 1 ≤ q ≤ 200000; 2 ≤ m ≤ 2*10^9 (prime). Binary exponentiation; the linear scan W times out on query one.
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