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Challenge 16 - Checked Product Helper
MediumCPMMSafety16 / 20

Challenge 16: Checked Product Helper

Unchecked arithmetic is dangerous in financial code.

Task

Implement checked_product.

Rules

  • Use checked_mul.
  • Return Ok(product) when multiplication succeeds.
  • Return Err("overflow") otherwise.

Why this matters

Many Solana program bugs start with safe-looking arithmetic that fails at large values.

LanguageRust
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