#include<iostream>
using namespace std;
inline bool check(int year){
    return year%400==0||(year%4==0&&year%100!=0);
}
int cnt(int year){
    int ans=0;
    for(int i=1;i<=year;i++)
        if(check(i))ans++;

    return ans;
}
int main(){
    int d[]={0,31,28,31,30,31,30,31,31,30,31,30};
    for(int i=1;i<12;i++)d[i]+=d[i-1];

    int y1,m1,d1,y2,m2,d2;
    while(cin>>y1>>m1>>d1>>y2>>m2>>d2){
        if(y1==-1||m1==-1||d1==-1)continue;
        if(y2==-1||m2==-1||d2==-1)continue;
        int a1=365*(y1-1)+cnt(m1>2?y1:y1-1)+d[m1-1]+d1;
        int a2=365*(y2-1)+cnt(m2>2?y2:y2-1)+d[m2-1]+d2;
        cout<<a2-a1<<endl;
    }
    return 0;
}