#include<vector>
#include<iostream>
#include<stdio.h>
#include<string>
#include<utility>
#include<algorithm>

#define loop while(1)
#define SZ(x) ((int)(x).size())
#define REP(i,n) for(int i=0, i##_len=(n); i<i##_len; ++i)
#define pushb push_back
#define popb pop_back
#define VI vector<int> 
#define VVI vector<VI>

typedef long long int ll;


using namespace std;


int main()
{
    int y,m,d;
    scanf("%d/%d/%d",&y,&m,&d);
    d+=2;
    if(d>31){
        d %= 31;
        m++;
    }
    if(m>12){
        m %= 12;
        y++;
    }
    printf("%04d/%02d/%02d",y,m,d);
	return 0;
}