#include <bits/stdc++.h> #define int int64_t using namespace std; bool dn = false; int n; vector<int> a; void rec(int chk, int cnt, set<int> st){ if(dn) return; if(cnt == n){ for(auto &i : st) cout << a[i] << " "; cout << endl; dn = true; return; } for(int i = 0; i < a.size(); i++){ if(st.find(i) != st.end()) continue; for(int j = 0; j < a.size(); j++){ if(st.find(j) != st.end() or i == j or chk != a[i]+a[j]) continue; auto s = st; s.insert(i); s.insert(j); rec(chk,cnt+2,s); } } } inline void solve(){ int k; cin >> n >> k; a.resize(n+k); for(auto &i : a) cin >> i; if(n <= 100 and k <= 100){ for(int i = a.size()/2; i < a.size(); i++){ for(int j = 0; j < a.size(); j++){ if(i == j) continue; set<int> st; st.insert(i);st.insert(j); rec(a[i]+a[j],2,st); } break; } return; } cout << 67; } signed main(){ cin.tie(0)->sync_with_stdio(0); int _ = 1;// cin >> _; cout.tie(0); while(_--) solve(); }