07. Trade Commissions

town = input().lower()
volume_selse = float(input())
commission = 0

if town == 'sofia':
    if volume_selse >= 0 and volume_selse <= 500:
        commission = volume_selse * 0.05
        print(f'{commission:.2f}')
    elif volume_selse > 500 and volume_selse <= 1000:
        commission = volume_selse * 0.07
        print(f'{commission:.2f}')
    elif volume_selse > 1000 and volume_selse <= 10000:
        commission = volume_selse * 0.08
        print(f'{commission:.2f}')
    elif volume_selse > 10000:
        commission = volume_selse *0.12
        print(f'{commission:.2f}')
    else:
        print('error')


elif town == 'varna':
    if volume_selse >= 0 and volume_selse <= 500:
        commission = volume_selse * 0.045
        print(f'{commission:.2f}')
    elif volume_selse > 500 and volume_selse <= 1000:
        commission = volume_selse * 0.075
        print(f'{commission:.2f}')
    elif volume_selse > 1000 and volume_selse <= 10000:
        commission = volume_selse * 0.10
        print(f'{commission:.2f}')
    elif volume_selse > 10000:
        commission = volume_selse *0.13
        print(f'{commission:.2f}')
    else:
        print('error')

elif town == 'plovdiv':
    if volume_selse >= 0 and volume_selse <= 500:
        commission = volume_selse * 0.055
        print(f'{commission:.2f}')
    elif volume_selse > 500 and volume_selse <= 1000:
        commission = volume_selse * 0.08
        print(f'{commission:.2f}')
    elif volume_selse > 1000 and volume_selse <= 10000:
        commission = volume_selse * 0.12
        print(f'{commission:.2f}')
    elif volume_selse > 10000:
        commission = volume_selse *0.145
        print(f'{commission:.2f}')
    else:
        print('error')
else:
    print('error')