#include <iostream>
using namespace std;
int zestawy, obzarciuch, pudelka, sekundy, czas, ile_ciastek;
int *suma_ciastek;
long ciastka;
int main()
{
suma_ciastek = new int[obzarciuch];
cin>> zestawy;
for (int i=0; i<zestawy; i++)
{
cin>>obzarciuch >>pudelka;
for( int i=1; i<=obzarciuch; i++)
{
cin>>sekundy;
ile_ciastek = 86400/sekundy;
suma_ciastek[i] = suma_ciastek[i-1] +ile_ciastek;
}
if (suma_ciastek[obzarciuch] % pudelka !=0)
cout<< (suma_ciastek[obzarciuch]/pudelka)+1 <<endl;
else
cout<< suma_ciastek[obzarciuch]/pudelka<<endl;
}
return 0;
}
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