progs/a873.py


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def no_of_subsequences(arr, k): 
	n = len(arr) 
	dp = [[0 for i in range(n + 1)] 
			for j in range(k + 1)] 
	for i in range(1, k + 1): 
		for j in range(1, n + 1): 
			dp[i][j] = dp[i][j - 1] 
			if arr[j - 1] <= i and arr[j - 1] > 0: 
				dp[i][j] += dp[i // arr[j - 1]][j - 1] + 1
	return dp[k][n]