From aaabfa90c9033044d0a9d5fe6776b718711ef46c Mon Sep 17 00:00:00 2001
From: Nick Thomas <me@ur.gs>
Date: Thu, 10 Dec 2020 20:03:11 +0000
Subject: [PATCH] Day 10 part 1

---
 10/input    | 114 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 10/part1.js |  32 +++++++++++++++
 2 files changed, 146 insertions(+)
 create mode 100644 10/input
 create mode 100644 10/part1.js

diff --git a/10/input b/10/input
new file mode 100644
index 0000000..5b21a23
--- /dev/null
+++ b/10/input
@@ -0,0 +1,114 @@
+74
+153
+60
+163
+112
+151
+22
+67
+43
+160
+193
+6
+2
+16
+122
+126
+32
+181
+180
+139
+20
+111
+66
+81
+12
+56
+63
+95
+90
+161
+33
+134
+31
+119
+53
+148
+104
+91
+140
+36
+144
+23
+130
+178
+146
+38
+133
+192
+131
+3
+73
+11
+62
+50
+89
+98
+103
+110
+164
+48
+80
+179
+92
+194
+86
+40
+13
+123
+68
+115
+19
+46
+77
+152
+138
+69
+49
+59
+30
+132
+9
+185
+1
+188
+171
+72
+116
+101
+61
+141
+107
+21
+47
+147
+182
+170
+39
+37
+127
+26
+102
+137
+191
+162
+172
+29
+10
+154
+157
+83
+82
+175
+145
+167
diff --git a/10/part1.js b/10/part1.js
new file mode 100644
index 0000000..3e9ff34
--- /dev/null
+++ b/10/part1.js
@@ -0,0 +1,32 @@
+const fs = require('fs');
+
+fs.readFile('input', (err, data) => {
+  if (err) throw err;
+  let input = data.toString().trim().split("\n").map((line) => Number(line) );
+
+  let builtIn = Math.max(...input) + 3;
+  let adapters = new Set ( input );
+  let jolts = 0;
+  let diff1s = 0;
+  let diff3s = 1; // The built-ion adapter
+
+  for (i=0; i < input.length; i++) {
+      // All entries are unique, so no need to worry about jolts+0
+    if (adapters.has(jolts+1)) {
+      diff1s++;
+      adapters.delete(jolts+1);
+      jolts++;
+    } else if (adapters.has(jolts+2)) {
+      adapters.delete(jolts+2);
+      jolts+=2;
+    } else if (adapters.has(jolts+3)) {
+      diff3s++;
+      adapters.delete(jolts+3);
+      jolts+=3;
+    } else {
+      throw ("oh no");
+    }
+  };
+
+  console.log(diff1s * diff3s);
+});