# import sys; input = sys.stdin.buffer.readline
# sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 10 ** 9 + 7; INF = float("inf")

def getlist():
	return list(map(int, input().split()))

import datetime

#処理内容
def main():
	Y, M, D = list(map(int, input().split("/")))
	dt = datetime.datetime(Y, M, D)
	dt2 = dt + datetime.timedelta(days = 2)

	ans = ""
	ans += str(dt2.year) + "/"
	if dt2.month < 10:
		ans += "0" + str(dt2.month)
	else:
		ans += str(dt2.month)

	ans += "/"

	if dt2.day < 10:
		ans += "0" + str(dt2.day)
	else:
		ans += str(dt2.day)

	print(ans)	

if __name__ == '__main__':
	main()