From 1ad66e37fd013eab65b2fb7b892289bdba9d1023 Mon Sep 17 00:00:00 2001
From: Dimitri Lozeve <dimitri@lozeve.com>
Date: Sun, 10 May 2020 18:01:37 +0200
Subject: [PATCH] Solve problem 5 task 1

---
 Contest2020/Contest2020.dyalog | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Contest2020/Contest2020.dyalog b/Contest2020/Contest2020.dyalog
index b32b5ce..7e53ff5 100644
--- a/Contest2020/Contest2020.dyalog
+++ b/Contest2020/Contest2020.dyalog
@@ -62,6 +62,9 @@
                   ⍝ 2020 APL Problem Solving Competition Phase II
                   ⍝ Stub function for Problem 5, Task 1 - rr
                   ⍝ Put your code and comments below here
+                  ⍝ ((1+⊢)⊥⊣) computes the total return for a vector
+                  ⍝ of amounts ⍺ and a vector of rates ⍵.
+                  r←((↑∘amounts)((1+⊢)⊥⊣)(↑∘rates))¨⍳⍴rates
                 ∇
 
                 ∇ r←cashFlow pv rates