func_code_string: #include <bits/stdc++.h>   using namespace std;   long long aX[100001];   long long aY[100001];   int main() {     long long n, k;     cin >> n >> k;     long long x, y;     cin >> x >> y;     long long mod = n * 2;     for (int i = 0; i < n; i++) cin >> aX[i] >> aY[i];     k = k % mod;     long long cx = 0, cy = 0;     for (int i = 1; i <= k; i++) {       cx = 2 * aX[(i - 1) % n] - cx;       cy = 2 * aY[(i - 1) % n] - cy;     }     if (k % 2 == 1)       cx -= x, cy -= y;     else       cx += x, cy += y;     cout << cx <<     << cy << endl;     return 0;   }   