1020C - Elections
Using unordered_set : 317095466
Using unordered_map : 317200168
How to make unordered_set work?????
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Never use anything with prefix unordered unless it is div2 or div1+div2 as they don't mostly keep anti hack test cases
Try using custom hash in the unordered data structures to avoid hacks.
refer to this blog by neal
you should probably avoid unordered sets and maps as much as possible
related blog 1
related blog 2