#include <iostream>

using namespace std;

int main(){
  int y1,m1,d1,y2,m2,d2;
  int month[13] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
  for(int i=0;i<12;i++)
    month[i+1] += month[i];

  while(true){
    cin >> y1 >> m1 >> d1 >> y2 >> m2 >> d2;
    if (y1==-1)
      break;
    int day=0;
    day += d2-d1+month[m2-1]-month[m1-1]+(y2-y1)*365;
    if(m2<3)
      y2--;
    if(m1>2)
      y1++;
    day += y2/4-(y1-1)/4-y2/100+(y1-1)/100+y2/400-(y1-1)/400;
    cout << day << endl;
  }
  return 0;
}