#include <iostream>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int N;
    while (cin >> N) {
        if (N == 0) break;  
        
        int x, nim_sum = 0;
        for (int i = 0; i < N; ++i) {
            cin >> x;
            nim_sum ^= x;  
        }

        if (nim_sum != 0)
            cout << "Yes\n"; 
        else
            cout << "No\n";  
    }

    return 0;
}