func_code_string: #include <bits/stdc++.h>   using namespace std;   #pragma GCC diagnostic ignored  -Wmissing-declarations    double triangle_area(const complex<double> p1, const complex<double> p2,                        const complex<double> p3) {     return abs((p2.real() - p1.real()) * (p3.imag() - p1.imag()) -                (p2.imag() - p1.imag()) * (p3.real() - p1.real())) /            2.0;   }   pair<double, complex<double> > getCenter(const complex<double> a,                                            const complex<double> b,                                            const complex<double> c) {     complex<double> res;     res += a;     res += b;     res += c;     return {triangle_area(a, b, c), res / 3.0};   }   complex<double> getCenter(const vector<complex<double> >& v) {     double area = 0;     complex<double> res;     const int n = v.size();     for (int i = 1; i + 1 < n; ++i) {       auto p = getCenter(v[0], v[i], v[i + 1]);       area += p.first;       res += p.second * p.first;     }     return res / area;   }   double getDist(const complex<double> p1, const complex<double> p2) {     return norm(p1 - p2);   }   int main() {     ios_base::sync_with_stdio(false);     int n, q;     cin >> n >> q;     vector<complex<double> > v(n);     for (auto& p : v) {       double x, y;       cin >> x >> y;       p = {x, y};     }     complex<double> center = getCenter(v);     stringstream out;     out << fixed << setprecision(10);     int curP = 1;     for (auto& p : v) p -= center;     complex<double> angle = 1.0;     while (q--) {       int type;       cin >> type;       if (type == 1) {         int f;         cin >> f;         --f;         curP ^= f;         complex<double> p1 = center + angle * v[curP];         complex<double> np{p1.real(), p1.imag() - abs(v[curP])};         angle = complex<double>{0, abs(v[curP])} / v[curP];         center = np;         int t;         cin >> t;         --t;         curP ^= t;       } else {         int t;         cin >> t;         --t;         complex<double> p = center + angle * v[t];         out << p.real() <<     << p.imag() <<   n ;       }     }     cout << out.str();   }   