Finished PE 099, usings logs it was quite easy

projecteuler/099/src/main.rs

@@ -0,0 +1,45 @@
+use nom::{
+    bytes::complete::tag,
+    character::complete::{multispace1, u64},
+    multi::separated_list1,
+    sequence::separated_pair,
+    IResult,
+};
+use std::{cmp::Ordering, time::Instant};
+
+fn parse_input(input: &str) -> IResult<&str, Vec<(u64, u64)>> {
+    let (input, result) = separated_list1(multispace1, separated_pair(u64, tag(","), u64))(input)?;
+
+    return Ok((input, result));
+}
+
+fn compare(a: &(u64, u64), b: &(u64, u64)) -> Ordering {
+    return (a.1 as f64 * (a.0 as f64).log2()).total_cmp(&(b.1 as f64 * (b.0 as f64).log2()));
+}
+
+fn main() {
+    println!("Hello, this is Patrick!");
+    let now = Instant::now();
+
+    let input_text = include_str!("base_exp.txt");
+    let (_, base_exps) = parse_input(input_text).unwrap();
+
+    let mut line = 1;
+    let mut result = line;
+    let mut biggest_n = (0, 0);
+
+    for n in base_exps {
+        match compare(&n, &biggest_n) {
+            Ordering::Greater => {
+                biggest_n = n;
+                result = line;
+            }
+            _ => {}
+        };
+        line += 1;
+    }
+
+    println!("The biggest number is written on line {}", result);
+
+    println!("Time passed: {:?}", Instant::now() - now);
+}