class student{
    public:
    int arr[5];
    
    int TotalScore(student a){
        int total=0;
        for(int i=0;i<5;i++)total+=arr[i];
        
        return total;
    }
};
int main() {
    int n;
    cin>>n;
    student Kristen;
    for(int i=0;i<5;i++){
        int temp;
        cin>>temp;
        Kristen.arr[i]=temp;
    }
    int KristenMarks=Kristen.TotalScore(Kristen);
    n--;
    int cnt=0;
    for(int i=1; i<=n;i++){
        student s;
        for(int i=0;i<5;i++){
            int temp;
            cin>>temp;
            s.arr[i]=temp;
        }
        int curr_marks=s.TotalScore(s);
        if(curr_marks>KristenMarks)cnt++;
    }
    cout<<cnt;
    return 0;
}