def main(races, S=1):
    for t, d in races:
        result = []
        for h in range(0, t+1):
            if (h * (t-h)) > d: result.append(h)
        S *= len(result)
    return S


if __name__ == '__main__':
    races=[(7,9), (15,40), (30,200)]
    races2=[(71530,940200)]
    racesI=[(42,284), (68,1005), (69,1122), (85,1341)]
    racesI2=[(42686985,284100511221341)]
    print(main(racesI2))