#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
int main(void)
{
    int year,month,day;
    scanf("%d/%d/%d",&year,&month,&day);
    bool uruu=false;
    if(year%4==0)
    {
        uruu=true;
        if(year%100!=0&&year%400==0)
        {
            uruu=false;
        }
    }
    day+=2;
    if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
    {
        if(day>31)
        {
            day-=31;
            month++;
        }
        if(month>12)
        {
            year++;
            month=1;
        }
    }
    else if (month==4||month==6||month==9||month==11)
    {
        if(day>30)
        {
            day-=30;
            month++;
        }
    }
    else
    {
        if(uruu==true)
        {
            if(day>29)
            {
                day-=29;
                month++;
            }
        }
        else
        {
            if(day>28)
            {
                day-=28;
                month++;
            }
        }
    }
    printf("%d/%02d/%02d",year,month,day);
}