you are helping an army. if you don't send supplies, you would die. if the food drops to 0 all would die. if you run out of iron, the army could not fight. you will start with 100 food and 100 iron. it takes 10 seconds to produce 1 food and 100 seconds to produce 1 iron.

food = 100
iron = 100

def food_per_second(time):
    return time / 10

def iron_per_second(time):
    return time / 100

def food_iron_counter(time):
    global food
    global iron
    food = food - food_per_second(time)
    iron = iron - iron_per_second(time)
    return food, iron

food_iron_counter(10)