func_code_string: #include <bits/stdc++.h>   using namespace std;   long long int X, Y, Z;   bool run(vector<long long int> &x, vector<long long int> &y,            vector<long long int> &z, long long int mid) {     long long int bound[4][2];     long long int t0 = x[0] + y[0] + z[0];     long long int t1 = -x[0] + y[0] + z[0];     long long int t2 = x[0] - y[0] + z[0];     long long int t3 = x[0] + y[0] - z[0];     bound[0][0] = t0 - mid;     bound[0][1] = t0 + mid;     bound[1][0] = t1 - mid;     bound[1][1] = t1 + mid;     bound[2][0] = t2 - mid;     bound[2][1] = t2 + mid;     bound[3][0] = t3 - mid;     bound[3][1] = t3 + mid;     for (int i = 1; i < x.size(); i++) {       long long int t0 = x[i] + y[i] + z[i];       long long int t1 = -x[i] + y[i] + z[i];       long long int t2 = x[i] - y[i] + z[i];       long long int t3 = x[i] + y[i] - z[i];       bound[0][0] = max(t0 - mid, bound[0][0]);       bound[0][1] = min(t0 + mid, bound[0][1]);       bound[1][0] = max(t1 - mid, bound[1][0]);       bound[1][1] = min(t1 + mid, bound[1][1]);       bound[2][0] = max(t2 - mid, bound[2][0]);       bound[2][1] = min(t2 + mid, bound[2][1]);       bound[3][0] = max(t3 - mid, bound[3][0]);       bound[3][1] = min(t3 + mid, bound[3][1]);     }     bool bad = false;     for (int j = 0; j < 4; j++) {       if (bound[j][0] > bound[j][1]) {         bad = true;       }     }     if (bad) return false;     for (int parity = 0; parity < 2; parity++) {       bool ans = false;       long long int b[4][2];       b[0][0] = (bound[0][0] - 3 * parity);       b[0][1] = (bound[0][1] - 3 * parity);       if (b[0][0] & 1) b[0][0]++;       if (b[0][1] & 1) b[0][1]--;       b[1][0] = (bound[1][0] - parity);       b[1][1] = (bound[1][1] - parity);       if (b[1][0] & 1) b[1][0]++;       if (b[1][1] & 1) b[1][1]--;       b[2][0] = (bound[2][0] - parity);       b[2][1] = (bound[2][1] - parity);       if ((b[2][0] & 1)) b[2][0]++;       if ((b[2][1] & 1)) b[2][1]--;       b[3][0] = (bound[3][0] - parity);       b[3][1] = (bound[3][1] - parity);       if (b[3][0] & 1) b[3][0]++;       if (b[3][1] & 1) b[3][1]--;       bool bad = false;       for (int j = 0; j < 4; j++) {         if (b[j][0] > b[j][1]) {           bad = true;         }       }       if (bad) continue;       long long int initVal = b[1][0] + b[2][0] + b[3][0];       long long int val[4] = {0, b[1][0], b[2][0], b[3][0]};       if (initVal > b[0][1]) {         continue;       } else if (initVal < b[0][0]) {         long long int needed = b[0][0] - initVal;         if ((b[1][1] - val[1]) >= needed) {           val[1] += needed;           needed = 0;         } else {           needed -= (b[1][1] - val[1]);           val[1] += (b[1][1] - val[1]);         }         if ((b[2][1] - val[2]) >= needed) {           val[2] += needed;           needed = 0;         } else {           needed -= (b[2][1] - val[2]);           val[2] += (b[2][1] - val[2]);         }         if ((b[3][1] - val[3]) >= needed) {           val[3] += needed;           needed = 0;         } else {           needed -= (b[3][1] - val[3]);           val[3] += (b[3][1] - val[3]);         }         if (needed <= 0) {           ans = true;         }       } else {         ans = true;       }       if (ans) {         long long int A = (val[1]) + parity;         long long int B = (val[2]) + parity;         long long int C = (val[3]) + parity;         assert(((B + C)) % 2 == 0 && ((A + C)) % 2 == 0 && ((B + A)) % 2 == 0);         X = (B + C) / 2;         Y = (A + C) / 2;         Z = (A + B) / 2;         return true;       }     }     return false;   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       vector<long long int> x(n), y(n), z(n);       for (int i = 0; i < n; i++) {         cin >> x[i] >> y[i] >> z[i];       }       long long int L = 0, R = 3e18;       long long int ax, ay, az;       ax = ay = az = -1e18;       while (L <= R) {         long long int mid = (L + R) >> 1;         if (run(x, y, z, mid)) {           R = mid - 1;           ax = X, ay = Y, az = Z;         } else {           L = mid + 1;         }       }       long long int actAns = -9e18;       long long int xt = 185097714347307042;       long long int yt = 169326667661285082;       long long int zt = 370218498415077464;       cout << ax <<     << ay <<     << az << endl;     }     return 0;   }   