using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
public class MainClass {
public static void Main() {
IEnumerable intSequence = Enumerable.Range(1, 10);
foreach (int item in intSequence)
Console.WriteLine(item);
int sum = intSequence.Aggregate(0, (s, i) => s + i);
Console.WriteLine(sum);
}
}