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Indices and Data Aggregation
Contest details
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Contest participants: 1070
Practice participants: 2871
Problems
01. Records’ Count
Problem Descriptions
Databases
02. Longest Magic Wand
03. Longest Magic Wand per Deposit Groups
04. Smallest Deposit Group per Magic Wand Size
05. Deposits Sum
06. Deposits Sum for Ollivander Family
07. Deposits Filter
08. Deposit Charge
09. Age Groups
10. First Letter
11. Average Interest
12. *Rich Wizard, Poor Wizard
13. Departments Total Salaries
14. Employees Minimum Salaries
15. Employees Average Salaries
16. Employees Maximum Salaries
17. Employees Count Salaries
18. *3rd Highest Salary
19. **Salary Challenge