No Zero Digit — Solution & Editorial
Digit DP with prefix difference f(R) − f(L−1), carrying a tight flag and a leading-zero flag.
Complexity: O(digits · states)
Watch out: Leading zeros are exempt (the integer itself has no leading zeros).
Digit DP with prefix difference f(R) − f(L−1), carrying a tight flag and a leading-zero flag.
Complexity: O(digits · states)
Watch out: Leading zeros are exempt (the integer itself has no leading zeros).