#include <bits/stdc++.h>

using namespace std;

namespace arithmetic {
  template<typename T> class Addition {
  public:
    template<typename V> T operator+(const V& v) const {
      return T(static_cast<const T&>(*this)) += v;
    }
  };

  template<typename T> class Subtraction {
  public:
    template<typename V> T operator-(const V& v) const {
      return T(static_cast<const T&>(*this)) -= v;
    }
  };

  template<typename T> class Multiplication {
  public:
    template<typename V> T operator*(const V& v) const {
      return T(static_cast<const T&>(*this)) *= v;
    }
  };

  template<typename T> class Division {
  public:
    template<typename V> T operator/(const V& v) const {
      return T(static_cast<const T&>(*this)) /= v;
    }
  };

  template<typename T> class Modulus {
  public:
    template<typename V> T operator%(const V& v) const {
      return T(static_cast<const T&>(*this)) %= v;
    }
  };
}

template<typename T> class IndivisibleArithmetic : public arithmetic::Addition<T>, public arithmetic::Subtraction<T>, public arithmetic::Multiplication<T> {};

template<typename T> class Arithmetic : public IndivisibleArithmetic<T>, public arithmetic::Division<T> {};

template<typename T> class Ordered {
public:
  template<typename V> bool operator==(const V& v) const {
    return !(static_cast<T>(v) < static_cast<const T&>(*this) || static_cast<const T&>(*this) < static_cast<T>(v));
  }
  
  template<typename V> bool operator!=(const V& v) const {
    return static_cast<T>(v) < static_cast<const T&>(*this) || static_cast<const T&>(*this) < static_cast<T>(v);
  }

  template<typename V> bool operator>(const V& v) const {
    return static_cast<T>(v) < static_cast<const T&>(*this);
  }

  template<typename V> bool operator<=(const V& v) const {
    return !(static_cast<T>(v) < static_cast<const T&>(*this));
  }

  template<typename V> bool operator>=(const V& v) const {
    return !(static_cast<const T&>(*this) < static_cast<T>(v));
  }
};

template<typename T> inline T gcd(T a, T b) {
  return __gcd(a, b);
}

template<typename T> inline T lcm(T a, T b) {
  return a / gcd(a, b) * b;
}

template<typename T> inline T floor(T a, T b) {
  return floor(a / b) * b <= a ? floor(a / b) : floor(a / b) - 1;
}

template<typename T> inline T ceil(T a, T b) {
  return floor(a + b - 1, b);
}

template<typename T> inline T round(T a, T b) {
  return floor(a + b / 2);
}

template<typename T> inline T mod(T a, T b) {
  return a - floor(a, b) * b;
}

template<typename T> inline T factorial(T n) {
  return n <= 1 ? 1 : factorial(n - 1) * n;
}

class Real : public Arithmetic<Real>, public arithmetic::Modulus<Real>, public Ordered<Real> {
private:
  static long double EPS;
  long double val;

public:
  Real() {}

  Real(long double val) : val(val) {}

  template<typename T> Real operator+=(const T& r) {
    val += static_cast<long double>(r);
    return *this;
  }
  
  template<typename T> Real operator-=(const T& r) {
    val -= static_cast<long double>(r);
    return *this;
  }
  
  template<typename T> Real operator*=(const T& r) {
    val *= static_cast<long double>(r);
    return *this;
  }
  
  template<typename T> Real operator/=(const T& r) {
    val /= static_cast<long double>(r);
    return *this;
  }

  template<typename T> Real operator%=(const T& r) {
    return *this = mod(*this, static_cast<Real>(r));
  }
  
  template<typename T> bool operator<(const T r) const {
    return val < static_cast<long double>(r) - EPS;
  }

  operator long double() const {
    return val;
  }
};

long double Real::EPS = 1e-8;

inline ostream& operator<<(ostream& os, const Real& a) {
  stringstream ss;
	ss << fixed << setprecision(15) << (long double)a;
  os << ss.str();
  return os;
}

inline istream& operator>>(istream& is, Real& a) {
	long double n;
	is >> n;
	a = n;
	return is;
}

class Point : public Arithmetic<Point> {
public:
  Real x, y;

  Point() {}

  Point(const Real& x) : x(x), y(0) {}

  Point(const Real& x, const Real& y) : x(x), y(y) {}

  Point operator+=(const Point& p) {
    x += p.x;
    y += p.y;
    return *this;
  }

  Point operator-=(const Point& p) {
    x -= p.x;
    y -= p.y;
    return *this;
  }

  Point operator*=(const Point& p) {
    Real xx = x * p.x - y * p.y;
    y = x * p.y + y * p.x;
    x = xx;
    return *this;
  }

  Point operator*=(const Real& r) {
    x *= r;
    y *= r;
    return *this;
  }

  Point operator/=(const Point& p) {
    Real nrm = p.norm();
    Real xx = (x * p.x + y * p.y) / nrm;
    y = (y * p.x - x * p.y) / nrm;
    x = xx;
    return *this;
  }

  Point operator/=(const Real& r) {
    x /= r;
    y /= r;
    return *this;
  }

  Real norm() const {
    return x * x + y * y;
  }

  Real abs() const {
    return sqrt(norm());
  }

  Point conj() const {
    return Point(x, -y);
  }
};

inline ostream& operator<<(ostream& os, const Point& point) {
	os << point.x << " " << point.y;
	return os;
}

inline istream& operator>>(istream& is, Point& point) {
  Real x, y;
	is >> x >> y;
	point = Point(x, y);
	return is;
}

class Line {
public:
  Point a, b;

  Line() {}

  Line (const Point& a, const Point& b) : a(a), b(b) {}

  Point vec() const {
    return b - a;
  }
};

inline ostream& operator<<(ostream& os, const Line& line) {
	os << line.a << " " << line.b;
	return os;
}

inline istream& operator>>(istream& is, Line& line) {
  Point a, b;
  is >> a >> b;
  line = Line(a, b);
  return is;
}

inline Point projection(const Point& a, const Point &b) {
  return a * (b / a).x;
}

inline Point projection(const Line& line, const Point& point) {
  return line.a + projection(line.vec(), point - line.a);
}

inline Point reflection(const Point& a, const Point &b) {
  return a * (b / a).conj();
}

inline Point reflection(const Line& line, const Point& point) {
  return line.a + reflection(line.vec(), point - line.a);
}

int main() {
  Line line;
  cin >> line;
  int q;
  cin >> q;
  for (int i = 0; i < q; ++i) {
    Point p, r;
    cin >> p;
    r = reflection(line, p);
    cout << r << endl;
  }
}

Measured memory_bytes: 1308