# 
Write a program to compute:

f(n)=f(n-1)+100 when n>0
and f(0)=1

with a given n input by console (n>0).
 
 
def f(n):
    if n==0:
        return 0
    else:
        return f(n-1)+100

n=int(raw_input())
print f(n)

