from functools import lru_cache
data = open(0).read().strip()

part_1 = False
if part_1:
    repeats = 40
else:
    repeats = 50

@lru_cache
def look_and_say(data: str) -> str:
    r = ""
    i = 0
    while i < len(data):
        count = 0
        c = data[i]
        while i < len(data) and data[i] == c:
            count += 1
            i += 1
        r += f"{count}{c}"
    return r

CHUNK_SIZE = 10000
for _ in range(repeats):
    ndata = ""
    lo, up = 0, CHUNK_SIZE
    while up < len(data):
        while up < len(data) and data[up - 1] == data[up]:
            up += 1
        ndata += look_and_say(data[lo:up])
        lo, up = up, up + CHUNK_SIZE
    ndata += look_and_say(data[lo:up])
    data = ndata

print(len(data))