#include <iostream>
using namespace std;
int main(){
  int y1,m1,d1,y2,m2,d2,cnt,u,r;
  int d[13]={0,32,29,32,31,32,31,32,32,31,32,31,32};
  while(1){
    cin >> y1 >> m1 >> d1 >> y2 >> m2 >> d2;
    if(y1<0||m1<0||d1<0||y2<0||m2<0||d2<0) break;
    cnt=0;
    while(1){
      if(y1==y2&&m1==m2&&d1==d2) break;
      u=0;
      if(y1%400==0) u=1;
      else if(y1%100==0) u=0;
      else if(y1%4==0) u=1;
      if(u==1&&m1==2){
	if(d1==d[m1]+1){
	  m1++;
	  d1=1;
	}else{
	  cnt++;
	  d1++;
	}
      }else{
	if(d1==d[m1]){
	  if(m1==12) m1=1,y1++;
	  else m1++;
	  d1=1;
	}else{
	  cnt++;
	  d1++;
	}
      }
    }
    cout << cnt << endl;
  }
  return 0;
}