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def getMaxTrafficTimes(start, end):
    n = len(start)
    start.sort()
    end.sort()
    ans, cmax, j = start[0], 1, 0

    for i in range(1, n):
        while end[j] < start[i]:
            j += 1
        if i - j + 1 > cmax:
            cmax = i - j + 1
            ans = start[i]

    return ans

MSCI getmaxtraffic Time โœ…
#include <bits/stdc++.h>
using namespace std;
#define int long long

long triplets(long t, vector<int> d) {
    int n = d.size();
    long count = 0;

    sort(d.begin(), d.end());

    for (int i = 0; i < n - 2; ++i) {
        int j = i + 1;
        int k = n - 1;

        while (j < k) {
            int sum = d[i] + d[j] + d[k];
            if (sum <= t) {
                count += (k - j);
                ++j;
            }
            else {
                --k;
            }
        }
    }

    return count;
}


MSCI Triplets โœ…
SQL: Calendar Application Events Report 2(MSCI)โœ…
SELECT 
    e.dt,
    e.title,
    GROUP_CONCAT(CONCAT(g.full_name, ' <', g.email_address, '>') ORDER BY g.full_name SEPARATOR ', ') AS guests
FROM
    events e
JOIN
    events_guests eg ON e.id = eg.event_id
JOIN
    guests g ON eg.guest_id = g.id
WHERE
    g.on_vacation = 0
GROUP BY
    e.id, e.dt, e.title
ORDER BY
    e.dt ASC
LIMIT 5;
SELECT a.location, COUNT(f.flight_no) AS "Number of destination flights"
FROM airport a
JOIN flight f ON a.code = f.dest
GROUP BY a.location
HAVING COUNT(f.flight_no) > 0
ORDER BY COUNT(f.flight_no) DESC, a.location ASC;

AC flight sqlโœ…
def eulerTSieve(maxN):
    phi = list(range(maxN + 1))
    for i in range(2, maxN + 1):
        if phi[i] == i:
            for j in range(i, maxN + 1, i):
                phi[j] -= phi[j] // i
    return phi

def coprimeCount(A):
    maxN = 10**5
    phiValue = eulerTSieve(maxN)
   
    return [phiValue[num] for num in A]

IBM  coprime โœ…
def getValidWord(s, dictionary):
    def isSubSequence(word, string):
        it = iter(string)
        return all(c in it for c in word)
   
    validWords = [word for word in dictionary if isSubSequence(word, s)]
   
    if not validWords:
        return "-1"
   
    return min(validWords, key=lambda x: (len(x), x))


Glide typing โœ