if hrs <= 8: return hrs*100
elif hrs <= 12: return 800 + (hrs-8)*130
elif hrs <= 16: return 800 + 4*130 + (hrs-12)*140
elif hrs <= 20: return 800 + 4*130 + 4*140 + (hrs-16)*150
n = int(input("How many labourers: "))
name = input("Enter name: ")
hrs = int(input("Hours: "))
print(name, "Wages =", calc(hrs))