import sys
import datetime

read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines

s = readline().decode().strip()
y, m, d = [int(x) for x in s.split("/")]

t = datetime.datetime(y, m, d)
t = t + datetime.timedelta(days=+2)
ans = t.strftime("%Y/%m/%d")
print(ans)