#include <iostream>
using namespace std;


int sum_of(int num)
{
	int i,result = 0;
    for(i=1;i<=num;i++)
	{
		result=result+i;
	}
	
	return result;
}

int main()
{
	int sum = 0, i, num = 0;
	for(i=0;i<10;i++)
	{
		cin>>num;
		sum=sum+sum_of(num);
	}
	cout<<"The Sum is: "<<sum;
	system("Pause");
	return 0;
}