Rupsa and Number army

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Princess Rupsa came across a very interesting game. In the game, you have to face against a number army consisting of N distinct integers A1, A2, , , AN. In one move, you can shoot one magic bullet aiming at an alive enemy number, say X. The magic bullet will kill X and it will also kill X + 1 and X - 1 if they are alive when the bullet is shot. Game ends when the entire number army is killed. P

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L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

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L5 Full solution

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solution.cppC++17

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