import sys
a, b, c = [], {}, []
[a.extend(i.split()) for i in sys.stdin] and a.remove(a[0])
for i in a:
b[i] = b.get(i, 0) + 1
{c.append(i) for i, j in b.items() if j == max(b.values())} \
and print(min(c), end='')
aW1wb3J0IHN5cwoKYSwgYiwgYyA9IFtdLCB7fSwgW10KW2EuZXh0ZW5kKGkuc3BsaXQoKSkgZm9yIGkgaW4gc3lzLnN0ZGluXSBhbmQgYS5yZW1vdmUoYVswXSkKZm9yIGkgaW4gYToKICAgIGJbaV0gPSBiLmdldChpLCAwKSArIDEKe2MuYXBwZW5kKGkpIGZvciBpLCBqIGluIGIuaXRlbXMoKSBpZiBqID09IG1heChiLnZhbHVlcygpKX0gXAogICAgYW5kIHByaW50KG1pbihjKSwgZW5kPScnKQo=