#include<iostream>
using namespace std;

int fairfield(int y,int m,int d)
{
  if(m<3)
    {
      y--;
      m+=12;
    }
  return 365*y+(y/4)-(y/100)+(y/400)+(306*(m+1)/10)+d-428;
}

int main()
{
  int y1,m1,d1,y2,m2,d2;
  for(;cin>>y1>>m1>>d1>>y2>>m2>>d2,y1!=-1;)
    {
      cout<<fairfield(y2,m2,d2)-fairfield(y1,m1,d1)<<endl;
    }
}