#include using namespace std; #ifdef LOCAL #include "settings/debug.cpp" #else #define Debug(...) void(0) #endif #define rep(i, n) for (int i = 0; i < (n); ++i) using ll = long long; using ull = unsigned long long; int main() { cin.tie(nullptr)->sync_with_stdio(false); int n; cin >> n; vector a(n); rep(i, n) cin >> a[i]; set ans; vector sum(n + 1); rep(i, n) sum[i + 1] = sum[i] ^ a[i]; rep(l, n + 1) rep(r, n + 1) ans.insert(sum[r] ^ sum[l]); cout << ans.size() << '\n'; return 0; }