Question: Let UNARY-SSUM be the subset sum problem in which all numbers are represented in unary. Why does the NP-completeness proof for SUBSET-SUM fail to show

Let UNARY-SSUM be the subset sum problem in which all numbers are represented in unary. Why does the NP-completeness proof for SUBSET-SUM fail to show UNARY-SSUM is NP complete? Show that UNARY-SSUM ∈ P.

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