#pragma GCC optimize("O2") #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if __cplusplus >= 202002L #include #include #include #include #include #include #else #define ssize(v) (int)(v).size() #define popcount(x) __builtin_popcountll(x) constexpr int bit_width(const unsigned int x) { return x == 0 ? 0 : ((sizeof(unsigned int) * CHAR_BIT) - __builtin_clz(x)); } constexpr int bit_width(const unsigned long long x) { return x == 0 ? 0 : ((sizeof(unsigned long long) * CHAR_BIT) - __builtin_clzll(x)); } constexpr int countr_zero(const unsigned int x) { return x == 0 ? sizeof(unsigned int) * CHAR_BIT : __builtin_ctz(x); } constexpr int countr_zero(const unsigned long long x) { return x == 0 ? sizeof(unsigned long long) * CHAR_BIT : __builtin_ctzll(x); } constexpr unsigned int bit_ceil(const unsigned int x) { return x == 0 ? 1 : (popcount(x) == 1 ? x : (1u << bit_width(x))); } constexpr unsigned long long bit_ceil(const unsigned long long x) { return x == 0 ? 1 : (popcount(x) == 1 ? x : (1ull << bit_width(x))); } #endif #define int ll #define INT128_MAX (__int128)(((unsigned __int128) 1 << ((sizeof(__int128) * __CHAR_BIT__) - 1)) - 1) #define INT128_MIN (-INT128_MAX - 1) #define clock chrono::steady_clock::now().time_since_epoch().count() #ifdef DEBUG #define dbg(x) cout << (#x) << " = " << x << '\n' #else #define dbg(x) #endif using namespace std; using ll = long long; using ull = unsigned long long; using ldb = long double; using pii = pair; using pll = pair; //#define double ldb template ostream& operator<<(ostream& os, const pair pr) { return os << pr.first << ' ' << pr.second; } template ostream& operator<<(ostream& os, const array &arr) { for(const T &X : arr) os << X << ' '; return os; } template ostream& operator<<(ostream& os, const vector &vec) { for(const T &X : vec) os << X << ' '; return os; } template ostream& operator<<(ostream& os, const set &s) { for(const T &x : s) os << x << ' '; return os; } signed main() { ios::sync_with_stdio(false), cin.tie(NULL); int n; cin >> n; vector a(n); for(int &x : a) cin >> x; { int sum = 0; for(int x : a) sum ^= x; if (sum != 0) { cout << "No\n"; return 0; } } if (n > 15) { cout << "Yes\n"; } else { for(int msk = 1; msk + 1 < (1 << n); msk++) { int sum = 0; for(int i = 0; i < n; i++) if (msk >> i & 1) sum ^= a[i]; if (sum == 0) { cout << "Yes\n"; return 0; } } cout << "No\n"; } return 0; }