#include using namespace std; #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #define rep(i, n) for (long long i = 0; i < (long long)(n); i++) #define rep2(i, m ,n) for (int i = (m); i < (long long)(n); i++) #define REP(i, n) for (long long i = 1; i < (long long)(n); i++) typedef long long ll; int main() { int n;cin>>n; ll t = 1< v(t); rep(i,t){cin>>v[i];} while(1.89>(double)(clock() - start) / CLOCKS_PER_SEC){ int i = rand()%t;int j = rand()%t; if(v[i^j]!=(v[i]^v[j])){cout<<"No"<