from collections import defaultdict
import sys,heapq,bisect,math,itertools,string,queue,datetime
sys.setrecursionlimit(10**8)
INF = float('inf')
mod = 10**9+7
eps = 10**-7
AtoZ = [chr(i) for i in range(65,65+26)]
atoz = [chr(i) for i in range(97,97+26)]

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

'''
y,m,d = map(int,input().split('/'))
'''

today = input()
d = datetime.datetime.strptime(today, '%Y/%m/%d')
d += datetime.timedelta(days = 2)
print(d.strftime('%Y/%m/%d'))