#!/usr/bin/env python3 import sys import re from functools import reduce from itertools import starmap from math import ceil, sqrt from operator import mul def wins(time, distance): # invariant: hold * (time - hold) > distance # solve: -hold^2 + time*hold - distance = 0 # hold = (time +- sqrt(time^2 - 4 * distance)) / 2 # = (time +- d) / 2 # solution: (time - d) / 2 < hold < (time - d) / 2 d = sqrt(time ** 2 - 4 * distance) return int((time + d) / 2) - ceil((time - d) / 2) + 1 - 2 * (d % 1 == 0) times, distances = (re.findall(r'\d+', line) for line in sys.stdin) print(reduce(mul, starmap(wins, zip(map(int, times), map(int, distances))))) print(wins(int(''.join(times)), int(''.join(distances))))