diff --git a/day5/Boarding.ts b/day5/Boarding.ts
index 9ccde90..e5486b2 100644
--- a/day5/Boarding.ts
+++ b/day5/Boarding.ts
@@ -15,13 +15,13 @@ const main = () => {
     console.log(Math.max(...ids));
     ids.sort((a, b) => a - b);
     const myId = ids.reduce(
-        (carry, _, currIdx, all) =>
-            carry !== 0
+        (carry: number | null, _, currIdx, all) =>
+            carry !== null
                 ? carry
                 : all[currIdx + 1] - all[currIdx] > 1
                 ? all[currIdx] + 1
                 : carry,
-        0
+        null
     );
     console.log(myId);
 };
diff --git a/day9/XmasCracker.ts b/day9/XmasCracker.ts
index 755acaf..1a5d174 100644
--- a/day9/XmasCracker.ts
+++ b/day9/XmasCracker.ts
@@ -1,4 +1,4 @@
-import { readFileSync } from 'fs';
+// import { readFileSync } from 'fs';
 
 const isValidInSequence = (
     sequence: Array<number>,
@@ -27,6 +27,7 @@ const findCorruptedNumber = (
 };
 
 const findSumSequence = (originalSequence: Array<number>, preamble: number) => {
+    //Huh. I was lucky this worked.
     const corruptNumber = findCorruptedNumber(originalSequence, preamble);
     let start = 0;
     let end = 0;
@@ -44,12 +45,20 @@ const findSumSequence = (originalSequence: Array<number>, preamble: number) => {
     return originalSequence.slice(start, end);
 };
 
-const data = readFileSync('input.txt', 'utf-8')
-    .split('\n')
-    .filter((x) => x)
-    .map((n) => Number.parseInt(n, 10));
+const foo = async () => {
+    const data = await Deno.readTextFile('input.txt').then((f) =>
+        f
+            .split('\n')
+            .filter((x) => x)
+            .map((n) => Number.parseInt(n, 10))
+    );
+    console.log(findCorruptedNumber(data, 25));
+    const part2 = findSumSequence(data, 25).sort((a, b) => a - b);
+    console.log(part2[0] + part2[part2.length - 1]);
+};
+
+foo();
 
-console.log(findCorruptedNumber(data, 25));
 // const testData = [
 //     35,
 //     20,
@@ -72,6 +81,4 @@ console.log(findCorruptedNumber(data, 25));
 //     309,
 //     576,
 // ];
-const part2 = findSumSequence(data, 25).sort((a, b) => a - b);
-console.log(part2[0] + part2[part2.length - 1]);
 // console.log(findSumSequence(testData, 5));