#include<iostream>
using namespace std;

bool uru(int y){
  if(!(y%400))return true;
  if(!(y%100))return false;
  if(!(y%4))return true;
  return false;
}

int day(int y, int m, int d){
  int res = 0;
  int month[] = {31,0,31,30,31,30,31,31,30,31,30};

  for(int i=0;i<y;i++){
    if(uru(i))res += 366;
    else res += 365;
  }

  for(int i=0;i<m-1;i++)res += month[i];
  if(m>2){
    if(uru(y))res += 29;
    else res += 28;
  }

  res += d;
  return res;
}

  

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

  while(1){
    cin >> y1 >> m1 >> d1 >> y2 >> m2 >> d2;
    if(y1<0 || m1<0 || d1<0 || y2<0 || m2<0 || d2<0)break;

    int s1,s2;
    s1 = day(y1,m1,d1);
    s2 = day(y2,m2,d2);
    cout << s2 - s1 << endl;
  }
}