#include<bits/stdc++.h>
#define MAX_N 100001
#define INF_INT 2147483647
#define INF_LL 9223372036854775807
#define REP(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
typedef long long int ll;
typedef pair<ll,ll> P;

int main()
{
  
  int N,a[1001],y,m,d;
  scanf("%d/%d/%d",&y,&m,&d);
  struct tm birthdayStruct = {0,0,0,d,m,y};
  time_t now = mktime(&birthdayStruct);
  struct tm ts = {0,0,0,birthdayStruct.tm_mday+2,birthdayStruct.tm_mon,birthdayStruct.tm_year};
  time_t tomm = mktime(&ts);
  struct tm *tt = localtime(&tomm);
  printf("%04d/%02d/%02d\n",tt->tm_year,tt->tm_mon,tt->tm_mday);
  return 0;
}