s=[]
try:
    while(1):
        ss = input().strip()
        s.append(ss)
except:
    pass
ma=0
mi=1500
for i in s:
    ma = max(ma, len(i))
    mi = min(mi, len(i))
for i in s:
    if (mi == len(i)):
        print(i)
for i in s:
    if (ma == len(i)):
        print(i)