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1+-2+-3+-...+-2002 =0 ? Chile 2002 L2 P4

Source:

September 1, 2022
algebrachilean NMO

Problem Statement

All naturals from 11 to 20022002 are placed in a row. Can the signs: ++ and āˆ’- be placed between each consecutive pair of them so that the corresponding algebraic sum is 00?
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