from collections import defaultdict

# Read the number of strings
n = int(input())

# Use defaultdict to simplify the counting process
d = defaultdict(int)

# Read each string and update the count in the dictionary
for _ in range(n):
    s = input().strip()
    d[s] += 1

# Print the number of unique strings
print(len(d))

# Print the frequencies of the unique strings
print(" ".join(map(str, d.values())))