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Polynomial rolling hash mod 1000003 with base 257: - precompute base^(m-1) - slide window updating hash in O(1) per step - verify hash match with O(m) memcmp to skip false positives rolling_match "abcabcabcabcabcabc" "abc" = 6 Six non-overlapping copies of "abc" at positions 0,3,6,9,12,15. Tests `for _ = 0 to m - 2 do … done` unused loop variable (uses underscore wildcard pattern), Char.code arithmetic, mod arithmetic with intermediate negative subtractions, complex nested if/begin branching with inner break-via-flag. 151 baseline programs total.