B - Operation Stone Removal image

  • Thoughts.

    • If there is less than A remaining and it is the first move’s turn, the first move wins.
    • If there is less than B remaining and it is the late player’s turn, the late player wins.
    • Suppose B is less than A (wlog)
    • The first player wins if A+1 or less in the second turn.
    • In the first move, when A+2, even if 1 is taken, it is still greater than B, so the first move wins.
      • If it’s 2A+1 or less, you can take the first move to win.
      • If the side with the highest number of moves wins the game…
  • Official Explanation

    • Your intuition is right, you just need to show it in a proper and comprehensive case study.
  • competitive problem

  • Asymmetric Games


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