Given an integer composed input list A = and a target integer z, return the largest number of elements of A that will sum to z. Only the number of elements need be returned and not the list of those specific elements that were used in the summation. Detail an efficient algorithm if it exists or explain why it doesn’t.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Given an integer composed input list A = <a1, a2, … , an> and a target integer z, return the largest number of elements of A that will sum to z. Only the number of elements need be returned and not the list of those specific elements that were used in the summation. Detail an efficient algorithm if it exists or explain why it doesn’t.
 
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