mt19937_64 randdev(8901016);
inline int rand(int l, int h) { return uniform_int_distribution<int>(l, h)(randdev); }


int N,M,A[100010];
int x,best;
vector<int> used,unused,ans;

{
    rd(N,M,A(N));
    REP(i,M) x ^= A[N-i-1], used.push_back(N-i-1);
    REP(i,N-M) unused.push_back(i);
    
    REP(_,8000100){
        int j = rand(0,M-1);
        int k = rand(0,N-M-1);
        x ^= A[used[j]];
        x ^= A[unused[k]];
        swap(used[j],used[k]);
        if (x > best){
            best = x;
            if (_ > N/10){
                ans = used;
            }
        }
    }
    REP(i,M)
        wtSp(A[ans[i]]);
}