#include <stdio.h>
#include <time.h>

int main()
{
	int y, m, d;
	scanf("%d.%d.%d", &d, &m, &y);
    if(y>=0 && y<=9999)
    {
        //check month
        if(m>=1 && m<=12)
        {
            //check days
            if((d>=1 && d<=31) && (m==1 || m==3 || m==5 || m==7 || m==8 || m==10 || m==12))
            {}
            else if((d>=1 && d<=30) && m==4 || m==6 || m==9 || m==11)
            {}
            else if((d>=1 && d<=28) && m==2)
            {} 
            else if(d==29 && m==2 && (y%400==0 ||(y%4==0 && y%100!=0)))
            {} 
            else{
                printf("Nespravny datum\n");
              return 0;
            }
        }
        else
        {
            printf("Nespravny datum\n");
          return 0;
        }
    }
    else
    {
        printf("Nespravny datum\n");
      return 0;
    }
	struct tm t = { .tm_year=y-1900, .tm_mon=m-1, .tm_mday=d };
	t.tm_mday += 7;
	mktime(&t);
	if(t.tm_mday <10 && t.tm_mon+1 < 10){
		printf(" %d.0%d.%d\n\n", t.tm_mday, t.tm_mon+1, t.tm_year+1900);
	}	
	else if(t.tm_mday < 10){
		printf(" %d.%d.%d\n\n", t.tm_mday, t.tm_mon+1, t.tm_year+1900);
	}
	else 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);
	}

}