##Example 1

import math
bacteria = int(input("How many bacteria are at the start? "))
minutes = int(input("How many minutes are in the double time? "))
hours = float(input("How many hours would you like to wait? "))

time = hours*60
difference = minutes-time
while difference<=(.5*minutes):
    bacteria = bacteria*2
    time=time -minutes
    difference = minutes-time

print("After",hours,"hours there would be",bacteria,"bacteria.")


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##Example 2

bacteria = int(input("How many bacteria are at the start? "))
double = int(input("How many minutes are in the double time? "))
hours = float(input("How many hours would you like to wait? "))

hours = hours*60
interval = int(round(hours/double,0))

while interval!=0:
    bacteria = bacteria * 2
    interval = interval - 1
    
hours=hours/60
    
print("After "+str(hours)+" hours there would be "+str(bacteria)+" bacteria.")

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##Example 3

start= int(input("How many bacteria are at the start?"))
double= int(input("How many minutes are in the double time?"))
hours= float(input("How many hours would you like to wait?"))


growth= (hours*60)/double
growth= round(growth)

for x in range(growth):
    start= start*2
    
print("After", hours, "hours there would be", start, "bacteria.")



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##Example 4

start=int(input("How many bacteria are at the start? "))
dt=int(input("How many minutes are in the double time? "))
hrs=float(input("How many hours would you like to wait? "))
minsdt=hrs*60
remainder=minsdt%dt
total=start
if remainder%dt<10:
    cycle=int((minsdt-remainder)/dt)
else:
    cycle=int((minsdt+(dt-remainder))/dt)

growth=start*2    

for bacteria in range(cycle):
    growth=start*2**bacteria
    total=total+growth
print("After",hrs,"hours there would be",total,"bacteria.")