At one of the parallels of the Summer Computer School, n schoolchildren go to the parade. They need to stand in order. By the command of one schoolboy, all stand in a line and start counting. The first student in the line says "first", then the second says "second" and so on. Write this part of the script.
One number n (1≤n≤1000).
Print in one line all the numbers from 1 to n.