inFile = open('input.txt', 'r', encoding='utf8')
outFile = open('output.txt', 'w', encoding='utf8')

string = inFile.readlines()
c = {}
countVoices = 0
for d in string:
    p = d.strip()
    c[p] = c.get(p, 0) + 1
    countVoices += 1

c = sorted(c.items(), key=lambda x: x[1], reverse=True)
percent = c[0][1] / countVoices * 100
if percent > 50:
    print(c[0][0], file=outFile)
else:
    for name, _ in c[:2]:
        print(name, file=outFile)
inFile.close()
outFile.close()