Critical Path Calculator — illustrative example

INPUT
A: 2 days; B: 3 days after A; C: 1 day after A.

RESULT
Critical path A → B totals 5 days. The A → C branch totals 3 days under these assumptions.

REVIEW
Critical-path calculations require an acyclic dependency graph and consistent units. A changed duration can move the critical path.

This is a teaching example, not a live execution record.