#include <bits/stdc++.h> using namespace std; #define ll long long const ll mmod = 998244353; #define vl vector<long long> #define vll vector<vector<long long>> #define pl pair<long long, long long> #define vb vector<bool> std::vector<int> ucs(std::vector<int> A, std::vector<int> B){ ll n = A.size(); bool ok = true; for (ll i = 0; i < n; i++){ if (A[i] != B[i]){ ok = false; } } if (ok){ return A; } else{ return {-1}; } }