10088 - 2N + 1

2N + 1

Time Limit: 1 sec

**The Problem**

Little Shan is learning Math. He write a function like that

F(N) = 2N + 1

Given N, you need to calculate the value of F(N).

**The Input**

The input file contains only one integer number **N** (0<**N**<=100).

**The Output**

For input **N** you need to print the value of **F(N)** in a separate line.

**Sample Input**

2

**Sample Output**

5

[School Level]

ISCPC 2017 Preliminary

Problem Setter: Shahin ShamS