#include <bits/stdc++.h>
using namespace std;

int main() {
  int y, m, d;
  scanf("%d/%d/%d", &y, &m, &d);
  struct tm t = {};
  t.tm_year = y - 1900;
  t.tm_mon = m - 1;
  t.tm_mday = d + 2;
  mktime(&t);
  printf("%04d/%02d/%02d\n", t.tm_year + 1900, t.tm_mon + 1, t.tm_mday);
}