#include <bits/stdc++.h>

#include "boost/date_time/gregorian/gregorian.hpp"
#define rep(i, ss, ee) for (int i = ss; i < ee; ++i)
using namespace std;

void solve() {
  using namespace boost::gregorian;
  string ds;  // = "2000/1/1";
  cin >> ds;
  date d(from_string(ds));
  d += days(2);
  int yy = d.year();
  int mm = d.month();
  int dd = d.day();
  printf("%04d/%02d/%02d\n", yy, mm, dd);
  // printf("%04d/%02d/%02d\n", d.year(), d.month(), d.day());
}

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  solve();
  getchar();
}