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Hey guys, here is task number $$\boxed{2}$$!

As you can see, the name of this is CASHIER.

Plarry the Dinosaur has finally found a job as a cashier! (yay) However, the thing is, he is terrible at mental sum and wants you to write a code to help him in calculating the cost of items.

Input Details:

First line inputs n.

Next n lines input the cost of the ith item.

This line inputs x.

The next x lines are the items the purchaser bought, the number i representing the ith item.

Output Details:

The total cost of all the items.

Sample input:

3

0.25

5.67

10.01

2

3

1

Sample output:

10.26

Explanation for output:

The 1st item costs 0.25 dollars and the 3rd item costs 10.01 dollars. Thus, the total cost is 10.26 dollars.

Note by Charlton Teo
2 years, 7 months ago

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My solution in

# C++

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 #include #include using namespace std; int main(){ int items; cin >> items; vector costs; while (items--){ double cost; cin >> cost; costs.push_back(cost); } int bought; cin >> bought; double sum = 0; while (bought--){ int index; cin >> index; sum += costs[index]; } cout << sum; return 0; } 
· 2 years, 7 months ago

My solution in

# Java

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 import java.util.Scanner; public class Cashier { static Scanner in = new Scanner(System.in); public static void main(String args[]) { int items = in.nextInt(); double[] costs = new double[items]; for (int i = 0; i < items; i++) { costs[i] = in.nextDouble(); } int bought = in.nextInt(); double sum = 0; for (int i = 0; i < bought; i++) { int index = in.nextInt(); sum+=costs[index - 1]; } System.out.println(sum); } } 
· 2 years, 7 months ago

And here is python2 solution below:

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 num = input() # input n price_list = [] # inserting price for ith item for n in xrange(num): price_list.append(raw_input()) items = input() # no of item bought cost = 0 # summing up prices for item in xrange(items): cost += float(price_list[input()-1]) print cost 
· 2 years, 7 months ago

sorry ur the only one who tried this daniel XD anyway my solution:

  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 #include using namespace std; int main() { int x,n; double p[1000000]; double b = 0; cin>>x; for(int i = 0; i < x; i++){ cin>>p[i]; } cin>>n; for(int i = 0; i < n; i++){ int a; cin>>a; b+=p[a-1]; } cout<
· 2 years, 7 months ago