#include #define rep(i,a,b) for(int i=a;i=b;i--) #define fore(i,a) for(auto &i:a) #define all(x) (x).begin(),(x).end() #pragma GCC optimize ("-O3") using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); } typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60; templatebool chmax(T &a, const T &b) { if (abool chmin(T &a, const T &b) { if (b g; rep(j, max(0, i - K), i) g.insert(dp[j]); while (g.count(dp[i])) dp[i]++; } rep(i, 0, 50) printf("dp[%d] = %d\n", i, dp[i]); } //--------------------------------------------------------------------------------------------------- void _main() { cin >> N >> K; rep(i, 0, N) cin >> A[i]; //exp(); int g = 0; rep(i, 0, N) g ^= A[i] % (K + 1); if (g) printf("YES\n"); else printf("NO\n"); }