from fractions import gcd
from datetime import date, timedelta
from heapq import*
import math
from collections import defaultdict, Counter
import sys
from bisect import *
sys.setrecursionlimit(10 ** 7)
MOD = 10 ** 9 + 7


def main():
    a = list(map(int, input().split("/")))
    d = date(a[0], a[1], a[2])
    d = d + timedelta(days=2)
    print(d.strftime("%Y/%m/%d"))


if __name__ == '__main__':
    main()