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.The army eats 1 food every 60 sec.you decide how many food we produce.

def food(x):
  return 100 - 10 * x
  
def iron(x):
  return 100 - 100 * x

def life(x, y, z):
  return food(x) - y, iron(x) - z
  
life(10, 60, 100)