#define _XOPEN_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

int main()
{
    
    char dateStr[11];
    struct tm t;
    

    
    fgets(dateStr, 11, stdin);
    
    char* res = strptime(dateStr, "%d.%m.%Y", &t);
    if (res == NULL) {
        printf("error: can't parse date!\n");
        return 1;
    }
    
    t.tm_mday += 7;
    t.tm_sec = 0;
    t.tm_min = 0;
    t.tm_hour = 0;

    time_t mid = mktime(&t);
   // printf("%ld", (long)mid);
    struct tm* t2 = localtime(&mid);
    
    if(t2->tm_mon + 1 < 10){
        printf(" %d.0%d.%d\n\n", t2->tm_mday, t2->tm_mon + 1, t2->tm_year + 1900);
    } else{
        printf(" %d.%d.%d\n\n", t2->tm_mday, t2->tm_mon + 1, t2->tm_year + 1900);
    }
    return 0;
    /*if (time == (time_t)-1) {
        printf("fails with error: can't convert date to time!\n");
        return 1;
    }*/
    
    //t2 = localtime(&sec);
    
    /*time(&timer);
    double seconds = difftime(timer,mktime(&t));
    printf("%.f", seconds);
    return 0;
    if(t.tm_mon + 1 < 10){
        printf(" %d.0%d.%d\n\n", t.tm_mday, t.tm_mon + 1, t.tm_year + 1900);
    } else{
        printf(" %d.%d.%d\n\n", t.tm_mday, t.tm_mon + 1, t.tm_year + 1900);
    }
    
    
    exit(EXIT_SUCCESS);

    return 0;*/
}