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(a+b)%m & (a*b)%m arithmetic rules for overflow-safe math.

mathmodularUpdated 2025-09-01

Rules

(a+b)%m = (a%m + b%m)%m
(a*b)%m = (a%m * b%m)%m
(a-b)%m = (a%m - b%m + m)%m