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My leetcode graph - https://leetcode.com/SamoylenkoDmitry/
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https://leetcode.com/problems/second-minimum-time-to-reach-destination/description/

Second min time to travel from 1 to n in time-edged graph stopping every change seconds #hard #graph #bfs
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https://leetcode.com/problems/regions-cut-by-slashes/description/

Count islands divided by '\' and '/' in 2D matrix #medium #union-find
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