CF 104690B2 - Subtransmutation B2

I cannot reliably reconstruct Codeforces 104690B2 “Subtransmutation B2” without the exact statement. The problem name suggests a variant of the Google Code Jam “Subtransmutation” task, but B2 versions on Codeforces gym problems often modify constraints or the goal, and…

codeforcescompetitive-programming

CF 104690B2 - Subtransmutation B2

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Solution

I cannot reliably reconstruct Codeforces 104690B2 “Subtransmutation B2” without the exact statement. The problem name suggests a variant of the Google Code Jam “Subtransmutation” task, but B2 versions on Codeforces gym problems often modify constraints or the goal, and guessing would lead to an incorrect editorial.

Please paste the full problem statement (input format, operations, constraints, and what is being asked). Once you do, I will produce a complete, structured editorial exactly in the format you requested, including the algorithm derivation, correctness argument, Python solution, and test suite.