Day 1

01/input

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01/part1.js

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+const fs = require('fs')
+const readline = require('readline');
+
+const readInterface = readline.createInterface({
+    input: fs.createReadStream('input'),
+    console: false
+});
+
+let numbers = [];
+
+readInterface.on('line', function(line) {
+  numbers.push(Number(line));
+});
+
+readInterface.on('close', function(line) {
+  numbers.forEach(function(a) {
+    numbers.forEach(function(b) {
+      if (a + b == 2020) {
+        console.log(a*b);
+        process.exit();
+      }
+    });
+  });
+});

01/part2.js

@@ -0,0 +1,26 @@
+const fs = require('fs')
+const readline = require('readline');
+
+const readInterface = readline.createInterface({
+    input: fs.createReadStream('input'),
+    console: false
+});
+
+let numbers = [];
+
+readInterface.on('line', function(line) {
+  numbers.push(Number(line));
+});
+
+readInterface.on('close', function(line) {
+  numbers.forEach(function(a) {
+    numbers.forEach(function(b) {
+      numbers.forEach(function(c) {
+        if (a + b + c == 2020) {
+          console.log(a*b*c);
+          process.exit();
+        }
+      });
+    });
+  });
+});