#include <stdio.h>
#include <cmath>
#include <algorithm>
#include <stack>
 
using namespace std;
 
int num[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
 
bool isLeapYear(int year){
    if(year % 4 != 0)return false;
    else{
        if(year % 100 == 0){
            if(year%400 == 0)return true;
            else{
                return false;
            }
        }else{
            return true;
        }
    }
}
 
int main(){
 
    int year1,month1,day1,year2,month2,day2,sum;
 
    while(true){
        scanf("%d %d %d %d %d %d",&year1,&month1,&day1,&year2,&month2,&day2);
        if(year1 < 0 || month1 < 0 || day1 < 0 || year2 < 0 || month2 < 0 || day2 < 0)break;
 
        sum = 0;
 
        if(year1 == year2 && month1 == month2){
            printf("%d\n",day2-day1);
        }else if(year1 == year2){
 
            if(month1 == 2 && isLeapYear(year1) == true){
                sum += 29 - day1;
            }else{
                sum += num[month1] - day1;
            }
            for(int i=month1+1; i < month2; i++){
                if(i == 2 && isLeapYear(year1) == true){
                    sum += 29;
                }else{
                    sum += num[i];
                }
            }
            sum += day2;
 
            printf("%d\n",sum);
        }else{
 
            if(month1 == 2 && isLeapYear(year1)){
                sum += 29 - day1;
            }else{
                sum += num[month1] - day1;
            }
 
            for(int i = month1 + 1; i <=12; i++){
                if(i == 2 && isLeapYear(year1) == true){
                    sum += 29;
                }else{
                    sum += num[i];
                }
            }
 
            for(int i = year1+1; i < year2; i++){
                if(isLeapYear(i) == true)sum += 366;
                else{
                    sum += 365;
                }
            }
 
            for(int i=1; i < month2; i++){
                if(i == 2 && isLeapYear(year2) == true)sum += 29;
                else{
                    sum += num[i];
                }
            }
 
            sum += day2;
 
            printf("%d\n",sum);
 
        }
 
 
    }
 
    return 0;
}
