Hemmy the Hameter is lept in a box that is $hcm$ high but he has a yearring to see more of the world. Hs

owner has provided him with some smal wooden a$.$bes that are, $cm$ on each side as togs to kecp him

scoupied. Hemmy is very dever though and has reaised that $f$ he ples up enough cubes, he could buld a

searcase dut of the box and eseape that way. Hemmy has strorg hind legs, sa he is quite capabie of climbing

up a cube heighe so long as his hind legs are apported at the same level as the buse of the

cu$.$be$.$ This means

he muat buld his staircase so that each 'Wep' is long enough to epport his whole body. Hemmy has worked

cat how to lift a biock while he is climbing so that means thas as lang as he is atie so dimb up a step, he is

aho able to move new tlocks Lo that step, as needed.

Hemmy molkes that it his escape is going so work, he may need to leap from his highert stap, so it too mus

that he does not trip on the edge of the bex, whik leaping off the top stapl.

If Hemmys body leneh is & om determine the minimum number of cobes Hemny would need in order to

buld such a stairtake. For this probiem yeu moy awume that the bor is long enough to accormodxe the

staireas.

Input Format

A single ine in the format:

$hb$

indicaring the values of $h,$ and $8$ respecticly.

Constraints

$1h10$

$1z5$

$1b15$

Output Format

A single ine containing the toes number of cubes roquired to buid the staircase according to the constraints

described.

Sample input $0$

$1034$

Sample Outpur $0$

$20$

Explanation $0$

Since Hemmy is Acm long, and each cube is orly $3km$ an each side, he will require at least two of them to

support his fully body length. After puming the first $2$ cubes together agareat the edge of his box, it loolis like

the following lesch new clibe represerted by $\text{'}N$ T$)$

Nvi

This simple staircase so only $3km$ kigh though which is not enough sa he needs to increase it by one lsyer. To

do this, he pushes ancener $2$ cubes on top of the ones airady present, and lays down anocher $2$ to their left to

oteain the folowirg layou $($each old bioci mepreserted by Mr:

ns

Now, the stairtase is ficm high, which is till noe high enough. Adding anceher loyer on top of what has aireacy

been laid down and then $2$ more at the iett produces the followi ng inew blocks in boidt:

output should $be20$ the current code $is$ giving $18$ fix $it$ please #$!/$bin$/$python$3$

import math

import os

import random

import re

import sys

def calculate$\_$min$\_$cubes$($height$,$ side$\_$length, body$\_$length$)$:

total$\_$cubes $=0$

current$\_$height $=0$

while current$\_$height $$ height:

total$\_$cubes $+=2$ # Add two cubes for the current step

current$\_$height $+=$ side$\_$length # Increase the height by the side length of a cube

total$\_$cubes $+=2$ # Add two cubes for the next layer on the left side

# To reach the top and leap, add one more layer

total$\_$cubes $+=2$

return total$\_$cubes

if $\_\_$name$\_\_==\text{'}\_\_$main$\_\_\text{'}$:

# Input values

height, side$\_$length, body$\_$length $=$ map$($int$,$ input$().$split$())$

# Calculate and print the result

result $=$ calculate$\_$min$\_$cubes$($height$,$ side$\_$length, body$\_$length$)$

print$($result$)$