void Calc()
{
int N = int.Parse(Console.ReadLine());
int[] l = new int[N];
int[] r = new int[N];
for (int i = 0; i < N; i++)
{
string[] str = Console.ReadLine().Split(' ');
l[i] = int.Parse(str[0]);
r[i] = int.Parse(str[1]);
}
AbsoluteSum Ab = new AbsoluteSum(N);
Ab.Add(l[0]);
for (int i = 1; i < N; i++)
{
Ab.Min(l[i] - r[i], r[i - 1] - l[i - 1]);
Ab.Add(l[i]);
}
sb.Append(Ab.GetMin() + "\n");
}
public void GetAbsoluteSum_IntArrayValue_ReturnSumOfAbsoluteValueOfEachElement(int[] arr, int expected)
{
var actual = AbsoluteSum.GetAbsoluteSum(arr);
Assert.Equal(expected, actual);
}