#include <bits/stdc++.h>
#include "boost/date_time/gregorian/gregorian.hpp"
using namespace std;

int main() {
  using namespace boost::gregorian;
  string s;
  cin >> s;
  date d(from_string(s));
  d += days(2);
  int yyyy = d.year();
  int mm   = d.month();
  int dd   = d.day();
  printf("%04d/%02d/%02d\n", yyyy, mm, dd);
  return 0;
}