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Schedule of expenses by nature (Details) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cost of services | R$ (652,300) | R$ (434,654) | R$ (308,853)
General and administrative expenses | (622,615) | (402,855) | (239,120)
Total | (1,274,915) | (837,509) | (547,973)
Payroll | (677,564) | (446,473) | (324,252)
Hospital and medical agreements | (37,449) | (37,988) | (16,429)
Depreciation and amortization | (154,220) | (108,744) | (73,152)
Lease expenses | (11,229) | (2,555) | (4,494)
Utilities | (10,643) | (5,892) | (6,628)
Maintenance | (47,141) | (20,746) | (8,658)
Share-based compensation | (43,377) | (32,610) | (18,114)
Tax expenses | (7,997) | (5,326) | (2,696)
Pedagogical services | (47,881) | (24,037) | (6,271)
Sales and marketing | (39,506) | (18,361) | (12,966)
Allowance for doubtful accounts | (47,819) | (32,081) | (15,040)
Travel expenses | (7,542) | (4,550) | (7,054)
Consulting fees | (38,818) | (31,276) | (13,060)
Other | (103,729) | (66,870) | (39,159)
Total | R$ (1,274,915) | R$ (837,509) | R$ (547,973)

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