Trying to find concurrent times using c++

Question

Given user i out I am trying to figure out how to find out how many concurrent times there are.

// A C++ program to check if any two intervals overlap

#include <algorithm>

#include <iostream>

using namespace std;

// An interval has start time and end time

struct Interval {

    int start;

    int end;

};

// Compares two intervals according to their staring time.

// This is needed for sorting the intervals using library

// function std::sort(). See http:// goo.gl/iGspV

bool compareInterval(Interval i1, Interval i2)

{

    return (i1.start < i2.start) ? true : false;

}

// Function to check if any two intervals overlap

bool isOverlap(Interval arr[], int n)

{

    // Sort intervals in increasing order of start time

    sort(arr, arr + n , compareInterval);

    // In the sorted array, if start time of an interval

    // is less than end of previous interval, then there

    // is an overlap

    for (int i = 1; i < n; i++)

        if (arr[i - 1].end >

Answer 1

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