func_code_string: #include <bits/stdc++.h>   using namespace std;   namespace GR1 {   vector<int> solve(int N, int num_exact_matches, int num_common,                     const vector<int>& B) {     vector<queue<int> > pos(N + 2);     for (int i = 0, _n = (N); i < _n; ++i) {       int b = B[i];       pos[b].push(i);     }     int missing = 0;     set<pair<int, int>, greater<pair<int, int> > > S;     for (int v = (1), _b = (N + 1); v <= _b; ++v)       if (!pos[v].empty())         S.emplace(int((pos[v]).size()), v);       else         missing = v;     assert(missing > 0);     vector<int> res(N);     vector<bool> exact(N);     for (int t = 0, _n = (num_exact_matches); t < _n; ++t) {       auto it = S.begin();       int v = it->second;       S.erase(it);       queue<int>& q = pos[v];       int i = q.front();       q.pop();       res[i] = v;       exact[i] = true;       if (!q.empty()) S.emplace(int((q).size()), v);     }     int num_mismatches = N - num_common;     int max_freq = S.begin()->first;     if (max_freq * 2 > N - num_exact_matches + num_mismatches) return {};     vector<int> block;     for (auto it : S) {       int v = it.second;       while (!pos[v].empty()) {         int j = pos[v].front();         pos[v].pop();         block.push_back(j);       }     }     for (int t = 0, _n = ((N - num_exact_matches) / 2); t < _n; ++t)       block.push_back(block[t]);     for (int k = 0, _n = (N - num_exact_matches); k < _n; ++k) {       int i = block[k];       int j = block[k + (N - num_exact_matches) / 2];       res[i] = B[j];     };     ;     for (int i = 0, _n = (N); i < _n; ++i) {       if (exact[i]) continue;       if (res[i] == B[i]) {         assert(num_mismatches > 0);         --num_mismatches;         res[i] = missing;       }     };     ;     for (int i = 0; i < N && num_mismatches > 0; ++i) {       if (exact[i] || res[i] == missing) continue;       --num_mismatches;       res[i] = missing;     }     assert(num_mismatches == 0);     return res;   }   }  // namespace GR1   namespace GR2 {   vector<int> solve(int N, int num_exact_matches, int num_common,                     const vector<int>& B) {     vector<queue<int> > pos(N + 2);     for (int i = 0, _n = (N); i < _n; ++i) {       int b = B[i];       pos[b].push(i);     }     int missing = 0;     set<pair<int, int>, greater<pair<int, int> > > S;     for (int v = (1), _b = (N + 1); v <= _b; ++v)       if (!pos[v].empty())         S.emplace(int((pos[v]).size()), v);       else         missing = v;     assert(missing > 0);     vector<int> res(N);     for (int t = 0, _n = (num_exact_matches); t < _n; ++t) {       auto it = S.begin();       int v = it->second;       S.erase(it);       queue<int>& q = pos[v];       int i = q.front();       q.pop();       res[i] = v;       if (!q.empty()) S.emplace(int((q).size()), v);     }     int num_mismatches = N - num_common;     num_common -= num_exact_matches;     while (num_common > 0) {       assert(!S.empty());       auto max_it = S.begin();       int v = max_it->second;       S.erase(max_it);       assert(!pos[v].empty());       int i = pos[v].front();       pos[v].pop();       if (B[i] == v) {         if (int((S).size()) > 0) {           auto max2_it = S.begin();           int w = max2_it->second;           S.erase(max2_it);           assert(!pos[w].empty());           int j = pos[w].front();           pos[w].pop();           if (!pos[w].empty()) S.emplace(int((pos[w]).size()), w);           res[i] = w;           --num_common;           if (num_common > 0) {             res[j] = v;             --num_common;           }         } else if (num_mismatches > 0) {           res[i] = missing;           --num_mismatches;         } else           return {};       } else {         res[i] = v;         --num_common;       }       if (!pos[v].empty()) S.emplace(int((pos[v]).size()), v);     }     for (int i = 0, _n = (N); i < _n; ++i) {       if (res[i] == 0) {         assert(num_mismatches > 0);         --num_mismatches;         res[i] = missing;       }     }     return res;   }   }  // namespace GR2   int main(int argc, char* argv[]) {     ios_base::sync_with_stdio(false);     cin.tie(nullptr);     int TC;     cin >> TC;     for (int tc = (1), _b = (TC); tc <= _b; ++tc) {       int N, x, y;       cin >> N >> x >> y;       vector<int> B(N);       for (int i = 0, _n = (N); i < _n; ++i) cin >> B[i];       vector<int> res = GR1::solve(N, x, y, B);       if (res.empty())         cout <<  NO n ;       else {         cout <<  YES n ;         for (int a : res) cout << a <<    ;         cout <<   n ;       }     }     return 0;   }   