#include<iostream>
using namespace std;

int y[2],m[2],d[2];

int t[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};

int calc(int y,int m,int d){
  int cnt=(y-1)/4-(y-1)/100+(y-1)/400;
  int res = y*365;
  res=res+cnt+1-365;


  if(y%4==0&&(y%100!=0||y%400==0))t[2]++;
  int cnt2=0;
  for(int i=1;i<=m;i++){
    for(int j=1;j<=(i==m?d-1:t[i]);j++){
      cnt2++;
    }
  }
  if(y%4==0&&(y%100!=0||y%400==0))t[2]--;

  return res+cnt2;
}


int main(){
  int a,b;
  while(cin>>y[0]>>m[0]>>d[0]>>y[1]>>m[1]>>d[1]){
    if(y[0]<0||m[0]<0||d[0]<0||y[1]<0||m[1]<0||d[1]<0)break;
    a=calc(y[0],m[0],d[0]);
    b=calc(y[1],m[1],d[1]);
    cout<<b-a<<endl;
  }

}