Namespace Alias Usage

#include <iostream>
using namespace std;

// Long vendor HAL namespace
namespace VendorMegaChipCorporationUltraSeries9000_HardwareClockControlModule {
    void enableClock()  { cout << "CLOCK ENABLED"; }
    void disableClock() { cout << "CLOCK DISABLED"; }
}

// Create alias ClockHAL = <long vendor namespace>
namespace ClockHAL = VendorMegaChipCorporationUltraSeries9000_HardwareClockControlModule;
int main() {
    int cmd;
    cin >> cmd;

    // Write required calls here
    if(cmd==1)
    {
        VendorMegaChipCorporationUltraSeries9000_HardwareClockControlModule::enableClock();
    }
    else if(cmd==2)
    {
        ClockHAL::disableClock();
    }

    return 0;
}

Solving Approach