From c0125afce532d8509d373382e10c9a912d1f85eb Mon Sep 17 00:00:00 2001
From: ToxicMushroom <32853531+ToxicMushroom@users.noreply.github.com>
Date: Thu, 28 Aug 2025 16:28:52 +0200
Subject: [PATCH] Fix minimizer

---
 src/main/kotlin/Main.kt | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/main/kotlin/Main.kt b/src/main/kotlin/Main.kt
index 381ad9a..90f7d7b 100644
--- a/src/main/kotlin/Main.kt
+++ b/src/main/kotlin/Main.kt
@@ -37,10 +37,11 @@ fun main() {
     // Minimize transactions:
     for ((user, transactions) in payments.iterator()) {
         for ((target, pay) in transactions.iterator()) {
-            val payback = payments[target]?.firstNotNullOf { (other, euros) ->
-                assert(user == other)
-                euros
-            } ?: continue
+            val payback = payments[target]
+                ?.filter { (other, _) -> other == user }
+                ?.firstNotNullOfOrNull { (_, euros) ->
+                    euros
+                } ?: continue
             val common = min(pay, payback)
             val newPay = pay - common
             val newPayback = payback - common
@@ -51,6 +52,7 @@ fun main() {
             payments[target] = payments[target]!!.also {
                 it[user] = newPayback
             }
+            println("Minimized $user -> $target for $common")
         }
     }