input.txt 403 B

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  1. The first floor contains a strontium generator, a strontium-compatible microchip, a plutonium generator, and a plutonium-compatible microchip.
  2. The second floor contains a thulium generator, a ruthenium generator, a ruthenium-compatible microchip, a curium generator, and a curium-compatible microchip.
  3. The third floor contains a thulium-compatible microchip.
  4. The fourth floor contains nothing relevant.