2N + 1
Time Limit: 1 sec
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 file contains only one integer number N (0<N<=100).
For input N you need to print the value of F(N) in a separate line.
ISCPC 2017 Preliminary
Problem Setter: Shahin ShamS