(limit = 20)

(timeslot = 5 \* 60s)

Please write your username in order to register products: user3  
Please write (product,amount) you would like to register (press 'Enter' to quit): banana,5  
Product banana is now registered (amount: 5)  
uvas,8  
Product uvas is now registered (amount: 8)  
ananas,2  
Product ananas is now registered (amount: 2)  
banana,2  
Product banana already registered. Amount updated (total amount: 9)  
kiwi,5   
Product amount limit reached for the time interval, only registered 3 units  
Please wait 266 seconds to add more products, or press 'Enter' to quit

Exiting…

  
(limit = 20)

(timeslot = 2 \* 60s)

Please write your username in order to register products: user4  
Please write (product,amount) you would like to register (press 'Enter' to quit): banana,10  
Product banana is now registered (amount: 10)  
kiwi,5  
Product kiwi is now registered (amount: 5)  
kiwi,1  
Product kiwi already registered. Amount updated (total amount: 6)  
ananas,7  
Product amount limit reached for the time interval, only registered 4 units  
Please wait 106 seconds to add more products, or press 'Enter' to quit  
manga,4  
Product limit reached for the time interval  
Please wait 36 seconds to add more products, or press 'Enter' to quit  
manga,4  
Product manga is now registered (amount: 4)  
goiaba,18  
Product amount limit reached for the time interval, only registered 16 units  
Please wait 108 seconds to add more products, or press 'Enter' to quit  

Exiting…

  
  
(limit = 20)

(timeslot = 2 \* 60s)

Please write your username in order to register products: user5  
Please write (product,amount) you would like to register (press 'Enter' to quit): banana,21  
Product amount limit reached for the time interval, only registered 20 units  
Please wait 120 seconds to add more products, or press 'Enter' to quit

Exiting...