import sys
import datetime

sys.setrecursionlimit(10 ** 6)
int1 = lambda x: int(x) - 1
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]

def main():
    y,m,d=map(int,input().split("/"))
    today=datetime.date(y,m,d)
    today+=datetime.timedelta(days=2)
    print(today.strftime("%Y/%m/%d"))
main()