#include<iostream>

using namespace std;

const int day[13]={0,31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
const int Uday[13]={0,31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
int y,m,d,ty,tm,td;
long long int ans=0;
bool uru=false;

void uruu(int year){
	uru=false;
	if(year%4==0)uru=true;
	if(year%100==0)uru=false;
	if(year%400==0)uru=true;
}


int main(void){
	while(1){
		scanf("%d%d%d%d%d%d",&y,&m,&d,&ty,&tm,&td);
		if(y==-1 && m==-1 && d==-1 && ty==-1 && tm==-1 && td==-1)break;
		ans=0;
		uruu(y);
		while(1){
			if(y==ty && m==tm && d==td)break;
			else{
				ans++;
				if(uru){
					if(d==Uday[m]){
						m++;
						d=1;
						if(m==13){
							y++,uruu(y),m=1;
						}
					}else{
						d++;
					}
				}else{
					if(d==day[m]){
						m++;
						d=1;
						if(m==13){
							y++,uruu(y),m=1;
						}
					}else{
						d++;
					}
				}
			}
		}
		printf("%d\n",ans);
	}
    return 0;
}