#include <stdio.h>

int main()
{
	int i, j, N, X, M, A[200001];
	scanf("%d %d %d", &N, &X, &M);
	for (i = 1; i <= N; i++) scanf("%d", &(A[i]));
	for (i = N; i >= 1; i--) {
		while (M >= i && A[i] >= X) {
			M -= i;
			for (j = 1; j <= i; j++) A[j] >>= 1;
		}
		if (A[i] >= X) {
			printf("No\n");
			fflush(stdout);
			return 0;
		}
	}
	printf("Yes\n");
	fflush(stdout);
	return 0;
}