Update part 1

Author: lundgren2

src/2020/day6/part1.ts

@@ -1,6 +1,5 @@
 export const part1 = (input: string) => {
   return input
     .split('\n\n')
-    .map(a => [...new Set(a.split(/\n|\s/).join(''))].length)
-    .reduce((a, b) => a + b);
+    .reduce((a, b) => a + new Set(b.replace(/(\n|\r)/g, '')).size, 0);
 };