No test Case working!, Please tell the mistake

#1

Please mention the mistake in the approach

#2

hi @babayaga first you need to sort the activities according to their ending time, then you can greedily choose activities.

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#3

Okay, can you tell me how to sort this in array of pairs?
Can we implement sort function for pairs?

#4

@babayaga pass the array of pairs in the sort function along with compare function, in the compare function, assuming that pair.second is ending time

bool compare(pair<int, int> p1, pair<int, int> p2) {
    return p1.second < p2.second;
}
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#5

Thank you so much for the assistance @Ishitagambhir
Really helped me a lot
Marking it as resolved