func_code_string: #include <bits/stdc++.h>   using ll = long long;   constexpr int INF = 1073741823;   constexpr int MINF = -1073741823;   constexpr ll LINF = ll(4661686018427387903);   constexpr ll MOD = 1000000007;   const long double PI = acosl(-1.0L);   using namespace std;   void scans(string& str) {     char c;     str =   ;     scanf( %c , &c);     if (c ==   n ) scanf( %c , &c);     while (c !=   n  && c != -1 && c !=    ) {       str += c;       scanf( %c , &c);     }   }   void scanc(char& str) {     char c;     scanf( %c , &c);     if (c == -1) return;     while (c ==   n ) {       scanf( %c , &c);     }     str = c;   }   double acot(double x) { return PI / 2 - atan(x); }   ll LSB(ll n) { return (n & (-n)); }   ll p(ll a) { return a * a; }   int main() {     int t;     scanf( %d , &t);     while (t--) {       int r, g, b;       scanf( %d%d%d , &r, &g, &b);       vector<int> R(r), G(g), B(b);       for (int i = 0; i < (r); ++i) scanf( %d , &R[i]);       for (int i = 0; i < (g); ++i) scanf( %d , &G[i]);       for (int i = 0; i < (b); ++i) scanf( %d , &B[i]);       sort((R).begin(), (R).end());       sort((G).begin(), (G).end());       sort((B).begin(), (B).end());       ll ans = LINF;       for (int i = 0; i < (r); ++i) {         auto itegreen1 = lower_bound((G).begin(), (G).end(), R[i]),              iteblue1 = lower_bound((B).begin(), (B).end(), R[i]);         ll green1 = -1;         if (itegreen1 != G.end())           green1 = *itegreen1;         else           green1 = G[G.size() - 1];         if (itegreen1 != G.begin()) --itegreen1;         ll green2 = -1;         if (itegreen1 != G.begin())           green2 = *itegreen1;         else           green2 = G[0];         ll blue1 = -1;         if (iteblue1 != B.end())           blue1 = *iteblue1;         else           blue1 = B[B.size() - 1];         if (iteblue1 != B.begin()) --iteblue1;         ll blue2 = -1;         if (iteblue1 != B.begin())           blue2 = *iteblue1;         else           blue2 = B[0];         ans =             min<ll>({(green1 != -1 and blue1 != -1)                          ? p(green1 - R[i]) + p(R[i] - blue1) + p(blue1 - green1)                          : LINF,                      (green2 != -1 and blue1 != -1)                          ? p(green2 - R[i]) + p(R[i] - blue1) + p(blue1 - green2)                          : LINF,                      (green1 != -1 and blue2 != -1)                          ? p(green1 - R[i]) + p(R[i] - blue2) + p(blue2 - green1)                          : LINF,                      (green2 != -1 and blue2 != -1)                          ? p(green2 - R[i]) + p(R[i] - blue2) + p(blue2 - green2)                          : LINF,                      ans});       }       for (int i = 0; i < (g); ++i) {         auto itered1 = lower_bound((R).begin(), (R).end(), G[i]),              iteblue1 = lower_bound((B).begin(), (B).end(), G[i]);         ll red1 = -1;         if (itered1 != R.end())           red1 = *itered1;         else           red1 = R[R.size() - 1];         if (itered1 != R.begin()) --itered1;         ll red2 = -1;         if (itered1 != R.begin())           red2 = *itered1;         else           red2 = R[0];         ll blue1 = -1;         if (iteblue1 != B.end())           blue1 = *iteblue1;         else           blue1 = B[B.size() - 1];         if (iteblue1 != B.begin()) --iteblue1;         ll blue2 = -1;         if (iteblue1 != B.begin())           blue2 = *iteblue1;         else           blue2 = B[0];         ans = min<ll>({(red1 != -1 and blue1 != -1)                            ? p(red1 - G[i]) + p(G[i] - blue1) + p(blue1 - red1)                            : LINF,                        (red2 != -1 and blue1 != -1)                            ? p(red2 - G[i]) + p(G[i] - blue1) + p(blue1 - red2)                            : LINF,                        (red1 != -1 and blue2 != -1)                            ? p(red1 - G[i]) + p(G[i] - blue2) + p(blue2 - red1)                            : LINF,                        (red2 != -1 and blue2 != -1)                            ? p(red2 - G[i]) + p(G[i] - blue2) + p(blue2 - red2)                            : LINF,                        ans});       }       for (int i = 0; i < (b); ++i) {         auto itered1 = lower_bound((R).begin(), (R).end(), B[i]),              itegreen1 = lower_bound((G).begin(), (G).end(), B[i]);         ll green1 = -1;         if (itegreen1 != G.end())           green1 = *itegreen1;         else           green1 = G[G.size() - 1];         if (itegreen1 != G.begin()) --itegreen1;         ll green2 = -1;         if (itegreen1 != G.begin())           green2 = *itegreen1;         else           green2 = G[0];         ll red1 = -1;         if (itered1 != R.end())           red1 = *itered1;         else           red1 = R[R.size() - 1];         if (itered1 != R.begin()) --itered1;         ll red2 = -1;         if (itered1 != R.begin())           red2 = *itered1;         else           red2 = R[0];         ans = min<ll>({(red1 != -1 and green1 != -1)                            ? p(red1 - B[i]) + p(B[i] - green1) + p(green1 - red1)                            : LINF,                        (red2 != -1 and green1 != -1)                            ? p(red2 - B[i]) + p(B[i] - green1) + p(green1 - red2)                            : LINF,                        (red1 != -1 and green2 != -1)                            ? p(red1 - B[i]) + p(B[i] - green2) + p(green2 - red1)                            : LINF,                        (red2 != -1 and green2 != -1)                            ? p(red2 - B[i]) + p(B[i] - green2) + p(green2 - red2)                            : LINF,                        ans});       }       printf( %lld n , ans);     }     return 0;   }   