complete 11971.rs 30928.rs

storage/zeta/rs/completed/11971.rs

@@ -0,0 +1,73 @@
+use std::{io::stdin, iter::zip};
+
+pub struct Road {
+    length: usize,
+    max_speed: usize,
+}
+
+fn get_road_speed_by_distance(road: &Vec<Road>) -> Vec<usize> {
+    let mut speed_by_distance: Vec<usize> = Vec::new();
+
+    for road_segment in road.iter() {
+        for _ in 0..road_segment.length {
+            speed_by_distance.push(road_segment.max_speed);
+        }
+    }
+
+    return speed_by_distance;
+}
+
+fn get_violation_count(road: &Vec<Road>, road_run: &Vec<Road>) -> usize {
+    let speed_limit = get_road_speed_by_distance(road);
+    let run_speed = get_road_speed_by_distance(road_run);
+
+    if (speed_limit.len() != run_speed.len()) {
+        panic!("Road and run lengths do not match!");
+    }
+
+    return 
+        zip(speed_limit, run_speed)
+            .map(|(limit, speed)| speed.saturating_sub(limit) )
+            .max().unwrap();
+}
+
+fn main() {
+    let mut line = String::new();
+
+    stdin().read_line(&mut line).unwrap();
+    let (n, m) = {
+        let mut iter = line.split(' ').map(|x| x.trim().parse::<usize>().unwrap());
+
+        (iter.next().unwrap(), iter.next().unwrap())
+    };
+
+    let road: Vec<Road> = {
+        (0..n).map(|_| {
+            line.clear();
+            stdin().read_line(&mut line).unwrap();
+            let mut iter = line.split(' ').map(|x| x.trim().parse::<usize>().unwrap());
+
+            Road {
+                length: iter.next().unwrap(),
+                max_speed: iter.next().unwrap(),
+            }
+        })
+    }
+    .collect::<Vec<Road>>();
+
+    let road_run = {
+        (0..m).map(|_| {
+            line.clear();
+            stdin().read_line(&mut line).unwrap();
+            let mut iter = line.split(' ').map(|x| x.trim().parse::<usize>().unwrap());
+
+            Road {
+                length: iter.next().unwrap(),
+                max_speed: iter.next().unwrap(),
+            }
+        })
+    }
+    .collect::<Vec<Road>>();
+
+    println!("{}", get_violation_count(&road, &road_run));
+}