#!/usr/bin/env python3
# Take a value and a direction and output a smoothstepped value
# Usage: smoothstep [-d digits] [+-] value
import sys
from math import floor, ceil
args = sys.argv[1:]
if len(args) < 2 or ('+' not in args and '-' not in args):
    print("Usage: smoothstep [-d digits] [+-] value")
    exit(1)

digits = 2
if '-d' in args:
    i = args.index('-d')
    digits = int(args[i+1])
    del args[i:i+2]

cur = float(args[1].strip('%'))
if args[0] == '+':
    if cur >= 10:
        print(int(5*ceil(cur/5 + 1) if cur % 5 else cur + 5))
    elif cur >= 1 or digits <= 0:
        print(int(ceil(cur + 1) if cur % 1 else cur + 1))
    else:
        print(.1*ceil(cur/.1 + 1) if cur % .1 else cur + .1)
else:
    if cur > 10:
        print(int(5*floor(cur/5 - 1) if cur % 5 else cur - 5))
    elif cur > 1 or digits <= 0:
        print(int(ceil(cur - 1) if cur % 1 else cur - 1))
    else:
        print(.1*ceil(cur/.1 - 1) if cur % .1 else cur - .1)