#!/usr/bin/python
inputvalues = {}
for i in range(0,100):
    value = input()
    if 0 > value > 1000 : break
    else:
        if not value in inputvalues: inputvalues[value] = 1
        else: inputvalues[value] += 1
print max(inputvalues, key=inputvalues.get) + stats[max(stats, key=stats.get)]