#include<cstdio>
using namespace std;
int func(int,int,int);
int main(void)
{
	int y1,m1,d1,y2,m2,d2;
	int x1,x2;
	while(1)	{
		scanf("%d %d %d %d %d %d",&y1,&m1,&d1,&y2,&m2,&d2);
		if(y1<0 || m1<0 || d1<0 || y2<0 || m2<0 || d2<0)	break;
		x1=func(y1,m1,d1);
		x2=func(y2,m2,d2);
		printf("%d\n",x2-x1);
	}
	return 0;
}
int func(int y,int m,int d)
{
	int i,j,sum;
	int mo[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
	sum=0;
	for(i=0;i<y;i++)	{
		sum+=365;
		if(i%400==0 || (i%100!=0 && i%4==0))	sum++;
	}
	for(i=1;i<m;i++)	{
		sum+=mo[i];
		if(i==2)	{
			if(y%400==0 || (y%100!=0 && y%4==0))	sum++;
		}
	}
	sum+=d;
	return sum;
}
