Number of tellers is: 3

Number of customers is: 10

Customer 2 served by teller 2
Customer 3 served by teller 1
Customer 1 served by teller 3
Customer 4 served by teller 2
Customer 5 served by teller 1
Customer 6 served by teller 3
Customer 7 served by teller 2
Customer 8 served by teller 1
Customer 9 served by teller 3
Customer 10 served by teller 2