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Implement g(n)

A1300Function
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Time limit
2000 ms
Memory limit
256 MB
Submissions
24
Correct
4
Solved by
4
AC rate
16.667%

Statement

Implement g(n) returning $1 + 2 + \cdots + n$. Do not read input or print anything: the grader calls your function and prints what it returns. (Python only.)

Input

One integer $n$ ($1 \le n \le 10^6$), read by the grader.

Output

The grader prints the value your function returns.

Examples

Sample input 1
10
Sample output 1
55

Notes

Signature: def g(n):

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This problem accepts only these languages.

Python 3, PyPy3