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Fix minimizer

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This commit is contained in:
Merlijn 2025-08-28 16:28:52 +02:00
parent fb5250d501
commit c0125afce5
Signed by: ToxicMushroom
SSH key fingerprint: SHA256:fiv+rEfOFbxc5OPNgLT1nNCL/JndxzhkKbIJLp1JcCc
1 changed files with 6 additions and 4 deletions
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6
src/main/kotlin/Main.kt
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@ -37,8 +37,9 @@ fun main() {
// Minimize transactions: // Minimize transactions:
for ((user, transactions) in payments.iterator()) { for ((user, transactions) in payments.iterator()) {
for ((target, pay) in transactions.iterator()) { for ((target, pay) in transactions.iterator()) {
val payback = payments[target]?.firstNotNullOf { (other, euros) -> val payback = payments[target]
assert(user == other) ?.filter { (other, _) -> other == user }
?.firstNotNullOfOrNull { (_, euros) ->
euros euros
} ?: continue } ?: continue
val common = min(pay, payback) val common = min(pay, payback)
@ -51,6 +52,7 @@ fun main() {
payments[target] = payments[target]!!.also { payments[target] = payments[target]!!.also {
it[user] = newPayback it[user] = newPayback
} }
println("Minimized $user -> $target for $common")
} }
} }