// Library from https://github.com/square1001/algorithm-contest-library/blob/master/fraction.cpp long long gcd(long long x, long long y) { if (y == 0) return x; return gcd(y, x % y); } struct fraction { public: int a, b; explicit fraction() : a(0), b(1) {}; explicit fraction(int a_) : a(a_), b(1) {}; explicit fraction(int a_, int b_) : a(a_), b(b_) {}; bool operator==(const fraction& f) { return a == f.a && b == f.b; } bool operator!=(const fraction& f) { return a != f.a || b != f.b; } fraction& operator+=(const fraction& f) { long long ca = 1LL * a * f.b + 1LL * b * f.a; long long cb = 1LL * b * f.b; long long g = gcd((ca > 0 ? ca : -ca), cb); a = ca / g; b = cb / g; return *this; } fraction& operator-=(const fraction& f) { long long ca = 1LL * a * f.b - 1LL * b * f.a; long long cb = 1LL * b * f.b; long long g = gcd((ca > 0 ? ca : -ca), cb); a = ca / g; b = cb / g; return *this; } fraction& operator*=(const fraction& f) { long long ca = 1LL * a * f.a, cb = 1LL * b * f.b; long long g = gcd((ca > 0 ? ca : -ca), cb); a = ca / g; b = cb / g; return *this; } fraction& operator/=(const fraction& f) { long long ca = 1LL * a * f.b, cb = 1LL * b * f.a; if (cb < 0) ca *= -1, cb *= -1; long long g = gcd((ca > 0 ? ca : -ca), cb); a = ca / g; b = cb / g; return *this; } fraction operator+(const fraction& f) const { return fraction(*this) += f; } fraction operator-(const fraction& f) const { return fraction(*this) -= f; } fraction operator*(const fraction& f) const { return fraction(*this) *= f; } fraction operator/(const fraction& f) const { return fraction(*this) /= f; } bool operator<(const fraction& f) const { return (fraction(*this) - f).a < 0; } bool operator>(const fraction& f) const { return (fraction(*this) - f).a > 0; } bool operator<=(const fraction& f) const { return (fraction(*this) - f).a <= 0; } bool operator>=(const fraction& f) const { return (fraction(*this) - f).a >= 0; } }; #include #include #include using namespace std; int main() { int n; cin >> n; vector v(n); for (int i = 0; i < n; ++i) cin >> v[i].a >> v[i].b; sort(v.begin(), v.end()); for (int i = n - 1; i >= 0; --i) { cout << v[i].a << ' ' << v[i].b << endl; } return 0; }