解いてみる

SRM 440 DIV2 250

#include <cmath>
#include <vector>
using namespace std;

class IncredibleMachineEasy 
{
	public:
		double gravitationalAcceleration(vector <int> height, int T);
};

double IncredibleMachineEasy::gravitationalAcceleration(vector <int> height, int T)
{
	double sum = 0.0;
	for (int i = 0; i < height.size(); i++){
		sum += sqrt(height[i]);
	}
	sum *= sum;
	
	return sum / (0.5 * T * T);
}

C++わかんね。