12.py

d = {}
for _ in range(int(input())):
    f = input()
    d[f] = 1 + d.get(f, 0)

c = 0
for f in sorted(d.keys()):
    if d[f] - 1:
        print(f, "-", d[f])
        c += 1

if not c:
    print("Однофамильцев нет")