Naebbirac’s Phrases | MatCom Online Grader

The 2025 ICPC Caribbean Finals (Qualifier) - Warmup2

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A - Naebbirac’s Phrases

Languages: C, C++, Java, Python, Kotlin

Time & Memory limits: (details)

<div style="text-align: justify">
Naebbirac is excited about this weekend’s contest. He wants to fill the entire venue with posters and phrases related to the event. For this reason, Naebbirac hired a company for the task; he gave them all the phrases he needs, and they take care of covering the venue’s walls with the phrases like graffiti.

The problem is that the painter who was sent has a rare mental disorder called Incurable Change of Positions and Characters (ICPC); that is, he might change one character of the phrase for another (or even the same character), or he may swap two characters in the phrase from their respective positions. After that, the final phrases sometimes don’t even look like what was intended; for example, for "Welcome_Contestants" the final phrase could be "We_are_very_well_here_:)" What a crazy thing, don’t you think? But at least we can be sure that the final phrase will have the same number of characters as the original phrase! Now Naebbirac wants to know how many positions have different characters for each phrase in order to correct them; that is, pairs of different characters that share the same position.

Your task is to determine how many characters need to be corrected before the contest begins.
</div>

Input

Output

Sample test(s)

Input

3 Caribbean Naebbirac Welcome_Contestants We_are_fine_here_:) Bienvenidos_Concursantes Estamos_muy_bien_aqui_:)

--- Showing first 30 lines (click "Copy" to get full content) ---

Output

6 17 23

--- Showing first 30 lines (click "Copy" to get full content) ---

Matcom Online Grader

The 2025 ICPC Caribbean Finals (Qualifier) - Warmup2

Ended

A - Naebbirac’s Phrases

Languages: C, C++, Java, Python, Kotlin

Time & Memory limits: (details)

Input

Output

Sample test(s)