diff --git a/Sources/14/14.swift b/Sources/14/14.swift
index 6009355..61b22ab 100644
--- a/Sources/14/14.swift
+++ b/Sources/14/14.swift
@@ -44,21 +44,20 @@ class Day14: Runnable {
             })
         
         var pairCounts = [Pair:Int]()
+        var charCount = [String.Element:Int](minimumCapacity: 26)
         for i in startingPolymer.indices {
+            let firstCharacter = startingPolymer[i]
+            charCount[firstCharacter, default: 0] += 1
             let next = startingPolymer.index(i, offsetBy: 1)
             guard next != startingPolymer.endIndex else {
                 continue
             }
-            pairCounts[Pair(first: startingPolymer[i], second: startingPolymer[next]), default: 0] += 1
+            pairCounts[Pair(first: firstCharacter, second: startingPolymer[next]), default: 0] += 1
         }
-        var charCount = startingPolymer.reduce(into: [String.Element:Int](), {
-            $0[$1, default: 0] += 1
-        })
         
         for step in 1...40 {
             let tmpPairCounts = pairCounts
-            
-            for pairCount in tmpPairCounts {
+            tmpPairCounts.forEach { pairCount in
                 let pair = pairCount.key
                 let replacement = replacements[pair]!
                 pairCounts[pair]! -= pairCount.value