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#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;
}
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