# encoding:utf-8
'''
Created on 2017年8月3日

@author: wangtaoyuan
'''
i = int(raw_input("净利润："))
arr = [1000000, 600000, 400000, 200000, 100000, 0]
rat = [0.01, 0.015, 0.03, 0.05, 0.075, 0.1]
r = 0
for idx in range(0,6):
    if i > arr[idx]:
        r = r + (i - arr[idx]) * rat[idx]
        i = arr[idx]
print r