#include <stdio.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/types.h>

int main()
{
    struct tm tm_ptr;
    time_t now_time;
    time_t last_time;
    char year[5];
    char month[3];
    char day[3];
    char null[5];
    char deff;

    memset(year, 0x00, 5);
    memset(month, 0x00, 3);
    memset(day, 0x00, 3);
    fscanf(stdin, "%[0-9]%[^0-9]%[0-9]%[^0-9]%[0-9]",
                year, null,month,null,day);

    tm_ptr.tm_year  = atoi(year)-1900;
    tm_ptr.tm_mon = atoi(month)-1;
    tm_ptr.tm_mday = atoi(day);
    tm_ptr.tm_hour = 0;
    tm_ptr.tm_min  = 0;
    tm_ptr.tm_sec  = 0;
    tm_ptr.tm_isdst = 0;

    time(&now_time);
    last_time =mktime(&tm_ptr);
    printf("만난지 %d일\n",(now_time - last_time)/(3600*24));
}