#include <iostream>

using namespace std;

int Fairfield(int y,int m,int d){
  if(m <= 2){
    y--;
    m += 12;
  }
  return 365*y+y/4-y/100+y/400+153*(m+1)/5+d-428;
}

int main(){
  int y1,m1,d1,y2,m2,d2;

  while(true){
    cin >> y1 >> m1 >> d1 >> y2 >> m2 >> d2;

    if(y1 == -1 && m1 == -1 && d1 == -1 && 
       y2 == -1 && m2 == -1 && d2 == -1) break;

    cout << Fairfield(y2,m2,d2) - Fairfield(y1,m1,d1) << endl;
  }

  return 0;
}