fn arcane_study_strategy(criminals: vec<string>) -> vec<string> { let mut strategy_plan = vec::new(); for criminal in criminals { if criminal.contains("neglect") || criminal.contains("preparatory") { strategy_plan.push("bring back to the start with positive reinforcement"); } else if criminal.contains("arcane") { strategy_plan.push("engage in further study to understand motives"); } } return strategy_plan; }