Labels:text | screenshot | diagram | font | number | line OCR: Start A Success Raise Priority Restore Priority B Failure L1 Use SF No exists? Create L1 Delete L1 (Tc-T1)> No Delta? A Ret(0) Yes Create Failure (Tc-T2)> Yes IL2 Delta? Success No Delete L2 Delete L1 A A) A Failure Restore Priority B Success Ret(-1) Figure 1. An illustration of Algorithm !!!