Name the total number of years for chassis of maserati 250f and points less than 0
Year Entrant Chassis Engine Points
Luigi Piotti
1235052
real text text text real
2-1235052-1
Complete Formula One World Championship results
Complete Formula One World Championship results
1955 Scuderia Volpini Arzani-Volpini Maserati Straight-4 0
1956 Officine Alfieri Maserati Maserati 250F Maserati Straight-6 0
1956 Luigi Piotti Maserati 250F Maserati Straight-6 0
1957 Luigi Piotti Maserati 250F Maserati Straight-6 0
1958 Automobili OSCA O.S.C.A O.S.C.A Straight-4 0
SELECT COUNT Year FROM table WHERE Chassis = maserati 250f AND Points < 0
maserati 250f 0