event_id   event_type     time      receiver_id   sender_id    priority        message
1 	    R  	    986  	    10  	
2 	    S  	    275  	    10  	    10  	      2  	    We are great programmers
3 	    S  	    543  	    20  	    20  	      2  	    I am using Java
4 	    S  	    994  	    20  	    20  	      2  	    Is C++ more efficient?
5 	    S  	    880  	    20  	    10  	      2  	    Assignments are so easy
6 	    S  	    673  	    10  	    10  	      1  	    Midterm is coming soon
7 	    R  	    944  	    20  	
8 	    R  	    618  	    10  	
9 	    S  	    848  	    20  	    20  	      2  	    CSE373 is interesting
10 	    S  	    351  	    10  	    20  	      3  	    I spend little time on projects
11 	    S  	    107  	    10  	    10  	      2  	    Always enjoying programming!
12 	    R  	    648  	    10  	
13 	    S  	    223  	    20  	    10  	      2  	    CSE373 is interesting
14 	    S  	    300  	    10  	    20  	      1  	    Assignments are so easy
15 	    R  	    33  	    20  	
16 	    S  	    285  	    20  	    10  	      1  	    We are great programmers
17 	    R  	    684  	    10  	
18 	    R  	    588  	    20  	
19 	    S  	    854  	    10  	    20  	      2  	    I spend little time on projects
20 	    S  	    667  	    10  	    10  	      1  	    I wish to get a high grade