#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string>
#include <cstring>
#include <cctype>
#include <cmath>
#include <stack>
#include <queue>
#include <vector>
#include <set>
#include <map>
#include <list>
#include <stdio.h>
#include <string.h>
#include <cstdlib>
#include <math.h>
#include <bitset>
#include <iterator>
#include <iomanip>
#include <sstream>
#define INF 2000000000
using namespace std;
int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1};
#define sym cout<<"---------"<<endl;
#define ll long long
#define PL pair<long long, long long>
#define P pair<int,int>
#define mk make_pair
#define en endl
#define WHITE 0
#define BLACK 2
#define GRAY 1
#define RE return 0
#define int ll

int cal[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};

signed main(){
  int y,m,d;
  char ch;
  cin>>y>>ch>>m>>ch>>d;
  
  int limit=cal[m];
  if(y%4==0&&m==2) limit=29;
  if(y>2000&&y%100==0&&m==2&&y!=2400) limit=28;
  d+=2;
  if(limit<d){
    d=d-limit;
    m++;
  }
  if(m>12){
    m=1;
    y++;
  }
  cout<<y<<'/';
  if(m>=10) cout<<m<<'/';
  else cout<<0<<m<<'/';
  if(d>=10) cout<<d<<en;
  else cout<<0<<d<<en;
}