From 1d70fa4cd6a3b089a6b73e1c3008aacb3974a47e Mon Sep 17 00:00:00 2001
From: yenru0 <yenru0604@gmail.com>
Date: Wed, 17 Dec 2025 01:53:58 +0900
Subject: [PATCH] complete 11971.rs 30928.rs

---
 storage/zeta/rs/completed/11971.rs | 73 ++++++++++++++++++++++++++++++
 storage/zeta/rs/completed/30928.rs | 64 ++++++++++++++++++++++++++
 2 files changed, 137 insertions(+)
 create mode 100644 storage/zeta/rs/completed/11971.rs
 create mode 100644 storage/zeta/rs/completed/30928.rs

diff --git a/storage/zeta/rs/completed/11971.rs b/storage/zeta/rs/completed/11971.rs
new file mode 100644
index 0000000..a778de4
--- /dev/null
+++ b/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));
+}
diff --git a/storage/zeta/rs/completed/30928.rs b/storage/zeta/rs/completed/30928.rs
new file mode 100644
index 0000000..95a65b1
--- /dev/null
+++ b/storage/zeta/rs/completed/30928.rs
@@ -0,0 +1,64 @@
+use std::io::stdin;
+
+const YOKOHAMA: &[char] = &['Y', 'O', 'K', 'O', 'H', 'A', 'M', 'A'];
+
+fn get_yokohama_count(size: (usize, usize), field: &Vec<Vec<char>>) -> usize {
+    let (n, m) = size;
+    let mut count = 0;
+
+    let mut startings: Vec<(usize, usize)> = vec![];
+    for i in 0..n {
+        for j in 0..m {
+            if field[i][j] == 'Y' {
+                startings.push((i, j));
+            }
+        }
+    }
+
+    let mut deq: Vec<((usize, usize), usize)> = vec![];
+    for starting in startings {
+        deq.push((starting, 0));
+    }
+
+    while !deq.is_empty() {
+        let (loc, curr) = deq.pop().unwrap();
+        let next_char = YOKOHAMA[curr + 1];
+        for (dx, dy) in [(-1, 0), (1, 0), (0, -1), (0, 1)] {
+            let new_x = loc.0 as isize + dx;
+            let new_y = loc.1 as isize + dy;
+            if new_x < 0 || new_x >= n as isize || new_y < 0 || new_y >= m as isize {
+                continue;
+            }
+            let new_loc = (new_x as usize, new_y as usize);
+
+            if field[new_loc.0][new_loc.1] == next_char {
+                if curr + 1 == YOKOHAMA.len() - 1 {
+                    count += 1;
+                } else {
+                    deq.push((new_loc, curr + 1));
+                }
+            }
+        }
+    }
+
+    count
+}
+
+fn main() {
+    let mut line = String::new();
+
+    let (n, m) = {
+        stdin().read_line(&mut line).unwrap();
+        let mut iter = line.split(' ').map(|x| x.trim().parse::<usize>().unwrap());
+        (iter.next().unwrap(), iter.next().unwrap())
+    };
+
+    let field = (0..n)
+        .map(|_| {
+            line.clear();
+            stdin().read_line(&mut line).unwrap();
+            line.trim_ascii().chars().collect::<Vec<char>>()
+        })
+        .collect::<Vec<Vec<char>>>();
+    println!("{}", get_yokohama_count((n, m), &field));
+}