Sums in a Triangle

siat.cpp

#include <iostream>

int main()
{
	int x,l,m,n;
	std::cin >> x;
	int y[x][x];
	while(x--)
	{
		std::cin >> n;
		for (l=0;i<n;l++)
		{
			for (m=0;m<=l;m++)
			{
				std::cin >> y[l][m];
			}
		}	
		for(l=n-2;l>=0;l--)
		{
			for(m=0;m<=l;m++)
			{
				y[l][m]+=((y[l+1][m]>y[l+1][m+1])?y[l+1][m]:y[l+1][m+1]);
    	}
    }
    	std::cout << y[0][0] << endl;
	}
}