#include<iostream>
#include<stdlib.h>
#include<string>
using namespace std;

void run();

int main()
{
    run();
    return EXIT_SUCCESS;
}

void run()
{
    int y,m,d;
    scanf("%d/%d/%d",&y,&m,&d);
    int day[] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
    if((y%4==0&&!(y%100==0 && y%400!=0))){
        day[2]=29;
    }
    
    d+=2;
    if(day[m]<d){
        d=d-day[m]; m++;
        if(12<m){
            y++; m=1;
        }
    }
    
    printf("%d/%02d/%02d\n",y,m,d);
}