Submission #61380988

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Source Code Expand

def digit_sum(n):
    """Calculate the digit sum of a number represented as a string."""
    return sum(int(c) for c in n)

def is_good_integer(n):
    """Check if a number represented as a string is a good integer."""
    n_value = int(n)
    return n_value % digit_sum(n) == 0

def find_twin_good_integers(N):
    """Find twin good integers in the range [N, 2N]."""
    N = int(N)
    for a in range(N, 2 * N):
        b = a + 1
        if is_good_integer(str(a)) and is_good_integer(str(b)):
            return a
    return -1

# Input
N = input().strip()

# Output the result
result = find_twin_good_integers(N)
print(result)

Submission Info

Judge Result