from pathlib import Path

#n a vazut planeta asa ceva
def generator(path):
    word = ''
    with open(path) as file:
        while True:
            char = file.read(1)
            if char.isspace():
                if word:
                    yield word
                    word = ''
            elif char == '':
                if word:
                    yield word
                break
            else:
                word += char


nr = generator("elmaj.in")

n= next(nr)
g = open("elmaj.out","w+")
#print(t)

dict = {}
ok = 0

for a in nr:
    if a not in dict:
        dict[a]=1
    else:
        dict[a]+=1
        if dict[a] > int(n)//2:
            ok=1
            g.write(a+ " " + str(dict[a]) + '\n')
            break

if ok==0:
    g.write("-1\n")
g.close()