#include <stdio.h>

int main(void) {
	int i;
	int N, K;
	scanf("%d%d", &N, &K);
	bool result;
	int A[1000];

	for (i = 0; i < N; i++) {
		scanf("%d", &A[i]);
	}
	
	result = (A[0] % (K + 1) != 0);
	for (i = 1; i < N; i++) {
		result = result ^ ((A[i] - 1) % (K + 1));
	}

	if (result)
		printf("YES\n");
	else
		printf("NO\n");
}