Let's write all the positive integer numbers one after another from 1 without any delimiters (i.e. as a single string). It will be the infinite sequence starting with 123456789101112131415161718192021222324252627282930313233343536...

Your task is to print the k-th digit of this sequence.

Input

The first and only line contains integer k (1 ≤ k ≤ 10000) — the position to process (1-based index).

Output

Print the k-th digit of the resulting infinite sequence.

Examples

Input


7


Output


7


Input


21


Output


5
k = int(input(''))
y = 9
x = 1
i=2
m=0
if (k<10):
    print(k)
else:
    while (k > y):
        h = y
        y = y + (9 * i) * (10 ** x)
        x += 1
        i += 1
    z = (10 ** (i - 1) + (k - y - 1) // (i - 1))
    q = (k - h - 1) % (i - 1)
    print(str(z)[q])






