Program that buys and sell energy

I need to create a program that buys energy from 3 to 7 o’clock, and sells it at 13, if the price of 13 is 1.6x the price of 3, otherwise I should sell it at 19 if this price is 1.6x the price of 3.

I need to buy only a quantity of 800, between 3 and 7. If I do not find a price 1.6x superior at 13 or 19 I should sell it another day again on 13 or 19 if this price numbers are 1.6x superior to the price I bought energy.

Can you please give me suggestions to address this question?

I’ve made some if conditions but maybe it is not the best solution to this program.

if week1(1,13)*1.6 >= week1(1,53) & sum(week1(2,13:32))< 800
price=week1(1,13:32).*week1 (2,13:32)
total_cost=sum(price(1,:))
    Power=sum(week1(1,13:32))
    sold=Power*week1(1,53)
Profit=sum(sold-total_cost)

elseif week1(1,13)*1.6 >= week1(1,77) & sum(week1(2,13:32))< 800
price=week1(1,13:32).*week1 (2,13:32)
total_cost=sum(price(1,:))
    Power=sum(week1(1,13:32))
    sold=Power*week1(1,77)
Profit=sum(sold-total_cost)

else …

end

week1(1:2:11) are the prices,each row represents a day

week1(2:2:12) are the quantities.

week1(1,13) is the price of energy at 3 at the first day.

week1(1,77) is the price of energy at 19 at the first day.

week1(1,52) is the price of energy at 13 at the first day.

I tried to mix in the same matrix, quantities and prices, maybe that's part of the problem.

Time starts at 0 and finishes at 23, it goes in periods of 15 mins, so when I talk about the indexes 13:32 it means prices from 3 to 7 a.m, index 53 will be the price at 13, and 77 will be price 19.

In the second row I talk about quantities, so index 53 at row 2 will be the quantity to buy at 13.

I'm not used to as you can see matlab.