from datetime import date, timedelta

# Read the input date
input_date = input().strip()
year, month, day = map(int, input_date.split('/'))

# Create a date object and add two days
current_date = date(year, month, day)
two_days_later = current_date + timedelta(days=2)

# Format the output as specified
print(two_days_later.strftime('%Y/%m/%d'))