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Cash and cash equivalents
 12 Months Ended
Dec. 31, 2018
Text block [abstract]  
Cash and cash equivalents
6.

Cash and cash equivalents

 

     December 31, 2018      December 31, 2017  

Short-term bank deposits

      405,227        66,767  

Short-term investments

      2,357,823        —    
  

 

 

     

 

 

  
     2,763,050        66,767  
  

 

 

     

 

 

  

Cash and cash equivalents are held for the purpose of meeting short-term cash needs and include cash on hand, deposits with banks and other short-term highly liquid investments with original maturities of three-month or less, and with immaterial risk of change in value. The balance as at December 31, 2018 is relatated to an excess of cash and cash equivalents proceeds originated from the IPO and the follow-on offering mentioned in Notes 1.1 and 1.2, respectively.