using namespace std;

struct Point {
    int x;
    int y;

    auto operator<=>(const Point &) const = default;

    auto operator+(const Point &b) const {
        return Point{.x = x + b.x, .y = y + b.y};
    }

    void operator+=(const Point &b) {
        x += b.x;
        y += b.y;
    }
};

int main() {
    auto start = absl::Now();

    int x0 = 94;
    int x1 = 151;
    int y0 =-156;
    int y1 =-103;

    auto isOk = [&](const Point& p){
        return p.x >= x0 && p.x <=x1 && p.y >= y0 && p.y <= y1;
    };

    int ans = 0;
    for (int vx = 1; vx<=x1; ++vx) {
        for(int vy = y0; vy <= abs(y0); ++vy) {
            Point v = {.x = vx, .y = vy};
            Point p = {.x = 0, .y = 0};
            while(p.x <= x1 && p.y >= y0) {
                p += v;
                v.y -=1;
                if (v.x >0) v.x--;
                if (isOk(p)) {
                    ans++;
                    break;
                }
            }
        }
    }
    cout << ans << endl;
    cout << absl::Now() - start << endl;

    return 0;
}