#include <iostream>
#include <fstream>
#include <sstream>
#include <cstring>
#include <vector>
#include <cmath>

int main(void)
{
    int answer{ 1 };
    std::vector<int> time;
    std::vector<int> distance;

    std::ifstream input{ "resources/input.txt" };
    if (input.is_open())
    {
        int n;
        std::string line;

        /* Time */
        {
            std::getline(input,line);
            line.erase(0, std::strlen("Time:"));
            std::istringstream sline{ line };
            while(sline >> n)
            {
                time.push_back(n);
            }
        }

        /* Distance */
        {
            std::getline(input,line);
            line.erase(0, std::strlen("Distance:"));
            std::istringstream sline{ line };
            while(sline >> n)
            {
                distance.push_back(n);
            }
        }
    }
    input.close();

    for (int i = 0; i < time.size(); ++i)
    {
        double delta = std::sqrt(time[i] * time[i] - 4 * distance[i]);
        int from{ static_cast<int>(1 + (time[i] - delta) / 2)};
        int to{ static_cast<int>(std::ceil((time[i] + delta) / 2)) };
        answer *= to - from;
    }

    std::cout << answer << std::endl;
    return 0;
}