Fix benchmarks for completed 2020

2020/benches/days.rs

@@ -7,7 +7,7 @@ use criterion::criterion_main;
 use criterion::BenchmarkId;
 use criterion::Criterion;
 
-const DAYS_IMPLEMENTED: usize = 22;
+const DAYS_IMPLEMENTED: usize = 25;
 
 fn read_input(day: usize) -> Vec<u8> {
     let input_path = format!("inputs/{:02}.txt", day);

2020/src/day25.rs

@@ -70,6 +70,10 @@ impl Solution for Day25 {
 
         result.to_string()
     }
+
+    fn part2(&mut self, _input: &mut dyn Read) -> String {
+        "Part 2 is free!".to_string()
+    }
 }
 
 #[cfg(test)]