Complete the codeExercise 7/7Elementary20 XP

The sum from 1 to n

Task

The program reads a positive whole number n and prints the sum 1 + 2 + … + n. Fill in ___.

Examples

  • Input

    5

    Expected output

    15

Rules

  • Replace ___ with the right code.

After you submit, 2 hidden tests will also check your solution: n = 1, n = 100.

Python starts the first time you run code.

Ctrl+Enter runs the program. Tab indents. Press Esc, then Tab, to leave the editor.

Input (stdin)

Each line = one call to input().

Output

Hints

Try it yourself first. Each hint reveals a little more - and lowers the reward a little.

Signed out, hints are free - but no XP is awarded either.

Solution

The solution unlocks after the last hint.