#include<stdio.h>
int a[102];
int dp[102][1003];
int main()
{
	int n, m, l;
	scanf("%d %d %d", &n, &m, &l);
	int i, j;
	for (i = 0; i < n; i++)
		scanf("%d", &a[i]);
	for (j = 0; j < 1003; j++)
		dp[0][j] = 0;
	dp[0][l] = 1;
	for (i = 0; i < n; i++)
	{
		for (j = 0; j < 1003; j++)
			dp[i + 1][j] = dp[i][j];
		for (j = 0; j < 1003; j++)
			if (dp[i][j] > 0)
				dp[i + 1][(j + a[i]) / 2] = 1;
	}
	if (dp[n][m] > 0)
		printf("Yes\n");
	else
		printf("No\n");
	return 0;
}