Little Ke was admitted to the University and became a freshman. At the begin of their first year,  Little Ke was hard-working and selected as the monitor. In order to be close to his teachers, please help him to write a program to ask teachers' names, and then print a message to tell him/her that it's nice to meet him/her.

a string with length L (0<=L<=2^10)

a sentence that meet the condition.

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