By OBI - Olimpíada Brasileira de Informática 2014 Brazil
Professor Archimedes needs your help to find out which is the most common notes between the notes that students took in his last race. The class has N students and your program must print the note that appears more often in N notes list. If more than more frequent note, you must print the biggest one! For example, if the class has N = 10 students and grades are [20, 25, 85, 40, 25, 90, 25, 40, 55, 40], the most common grades are 25 and 40, taking place three times each . Your program should then print 40.
The input consists of two lines. The first line contains an integer N, the number of students in the class. The second line contains N integers, which is the list of students' grades.
Your program must print a single line containing just a number, the most frequent note of the list.
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