#include <bits/stdc++.h> using namespace std; int main() { int N, X, K; cin >> N >> X >> K; vector<int> Q(K, 0); const int mxn = 1e5 + 5; for (int i = 0; i < K; i++) { cin >> Q[i]; } int M; cin >> M; unordered_map<int, unordered_set<int>> mp; ...