From f1779d53d4479d7f88d0b1dfcc8d5f9f3c041ce8 Mon Sep 17 00:00:00 2001
From: Mia Herkt <mia@0x0.st>
Date: Wed, 1 Dec 2021 10:12:01 +0100
Subject: [PATCH] Day 1: Update C solution for part 2

---
 01/solution.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/01/solution.c b/01/solution.c
index 9895af4..b341cec 100644
--- a/01/solution.c
+++ b/01/solution.c
@@ -5,9 +5,14 @@
 
 int main(void) {
     uint16_t answer = 0;
-    for (uint16_t *p = input+1; p < (&input)[1]; p++) {
-        if (*p > *(p-1))
+    uint32_t prev = 0;
+    for (uint16_t *p = input+3; p < (&input)[1]; p++) {
+        uint32_t new = *(p-2) + *(p-1) + *p;
+
+        if (new > prev)
             answer++;
+
+        prev = new;
     }
 
     printf("Answer: %d\n", answer);