#include<iostream> #include<vector> using namespace std; using ul= unsigned long; int main() { int T; cin >> T; ul K, X, Y; ul G; vector<ul> A(3000), P(3000); for (int t = 0; t < T; t++) { cin >> K >> X >> Y; for (int k = 0; k < K; k++) { cin >> A[k]; } for (int k = 0; k < K; k++) { cin >> P[k]; } G = 0; for (int k = 0; k < K; k++) { G ^= A[k] % (P[k] + 1); } if (Y < X + G) { cout << "Z" << endl; } else { cout << "C" << endl; } } }