#include <iostream>
using namespace std;
 
int main(){
    cout << "Hello world!" << endl;
    return 0;
}

using namespace std;
 
const int count = plexiglasTransmissionCoefficient * ledStripLightLength;
for (int i = 0; i < count; ++i) 
{
 
    arr[i] = pow(ledStripLightLength * ledStripLightLength,
                 plexiglasTransmissionCoefficient - 1f);
    // и т.д.
}

double powSqr(int length,double coefficient)
{
   return pow(length * length,  coefficient - 1f);
};

// формулы от балды
for (int i = 0; i < plexiglasTransmissionCoefficient * ledStripLightLength; i++) {
    arr[i] = std::pow(ledStripLightLength * ledStripLightLength, plexiglasTransmissionCoefficient - 1f);
    // и т.д.
}