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graph = {0: [1, 2], 1: [3], 2: [3], 3: []}[0, 1, 2, 3]graph = {0: [1], 1: [2], 2: [0]}[]graph = {0: [], 1: [], 2: [0, 1]}[2, 0, 1]graph = {0: [1], 2: [3], 1: [2], 3: []}[0, 1, 2, 3]Time Complexity
Space Complexity
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