Editorial for COCI '15 Contest 5 #1 Zamka


Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.

For each integer larger than or equal to L, we need to determine the sum of its digits and check whether the sum is equal to given X. The search halts when we first find such a number (N). For each integer less than or equal to D, we need to determine the sum of its digits and check whether the sum is equal to given X. The search halts when we first find such a number (M).


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