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![Leftmost Column with at Least a One [LeetCode 1428] | Graph | Binary Search | Approach and Intuition](https://i.ytimg.com/vi/PviiYXMfkow/hqdefault.jpg?sqp=-oaymwEjCOADEI4CSFryq4qpAxUIARUAAAAAGAElAADIQj0AgKJDeAE=&rs=AOn4CLBuRFToeB1sZZF344Dbm64_gK52eA)
