#include <bits/stdc++.h>
using namespace std;
bool isYes() {
	string s;
	cin >> s;
	return s == "Yes";
}
int main () {
	int N;
	cin >> N;
	std::vector<vector<int>> gr(N);
	vector<pair<int, int>> eg(N-1);
	for (auto& [a, b] : eg) {
		cin >> a >> b;
		gr[--a].push_back(--b);
		gr[b].push_back(a);
	}
	vector<int> D(N, N + 1);
	D[0] = 0;
	queue<int> que;
	que.push(0);
	while (!que.empty()) {
		int u = que.front();
		que.pop();
		for (auto& v : gr[u]) {
			if (D[v] > D[u] + 1) {
				D[v] = D[u] + 1;
				que.push(v);
			}
		}
	}
	cout << "?";
	for (auto& [a, b] : eg) {
		if (D[a] & 1) swap(a, b);
		cout << " " << a + 1;
	}
	cout << endl;
	int fl = isYes();
	fl ^= 1;
	int ans = 0;
	for (int i = 0; i < 14; i ++) {
		cout << "?";
		for (auto& [a, b] : eg) {
			int x = (fl ? b : a);
			if (((x >> i) & 1) == 0) {
				x ^= (a ^ b);
			}
			cout << " " << x + 1;
		}
		cout << endl;
		ans |= (isYes() << i);
	}
	cout << "! " << ans + 1 << endl;
}