Add code

112A.rs

@@ -0,0 +1,24 @@
+use std::cmp::Ordering;
+use std::io::{self, BufRead, BufReader, Write};
+
+fn main() {
+    let mut stdin  = io::stdin();
+    let mut stdout = io::stdout();
+
+    let lines: Vec<String> =
+        BufReader::new(stdin)
+        .lines()
+        .map(|line| line.unwrap().to_lowercase())
+        .collect();
+
+    let line1 = lines[0].as_str();
+    let line2 = lines[1].as_str();
+
+    let result = match line1.cmp(line2) {
+        Ordering::Less    => -1,
+        Ordering::Equal   => 0,
+        Ordering::Greater => 1,
+    };
+
+    stdout.write_all(format!("{}\n", result).as_ref()).unwrap();
+}

263A.rs

@@ -0,0 +1,17 @@
+use std::io::{self, BufRead};
+
+fn main() {
+    let matrix: Vec<Option<i32>> =
+        io::BufReader::new(io::stdin())
+        .lines()
+        .map(|item| {
+            item.unwrap().split_whitespace().position(|item| item == "1")
+                .and_then(|item| Some(item as i32))
+        })
+        .collect();
+
+    let vertical_ops = (2 - (matrix.iter().position(|item| *item != None).unwrap() as i32)).abs();
+    let horizontal_ops = (2 - matrix.iter().find(|item| **item != None).unwrap().unwrap()).abs();
+
+    println!("{}", vertical_ops + horizontal_ops);
+}

339A.rs

@@ -0,0 +1,11 @@
+use std::io;
+
+fn main() {
+    let mut buf = String::new();
+    io::stdin().read_line(&mut buf).unwrap();
+
+    let mut numbers: Vec<String> = buf.trim_end().split('+').map(|item| item.to_string()).collect();
+    numbers.sort();
+
+    println!("{}", numbers.join("+"));
+}

4A.rs

@@ -0,0 +1,18 @@
+use std::io::{self, Read, Write};
+
+fn main() {
+    let mut stdin  = io::stdin();
+    let mut stdout = io::stdout();
+
+    let mut weight_string = String::new();
+    stdin.read_to_string(&mut weight_string).unwrap();
+
+    let weight = weight_string.trim_end().parse::<i32>().unwrap();
+
+    if weight % 2 == 0 && weight != 2 {
+        stdout.write_all(b"YES\n").unwrap();
+    }
+    else {
+        stdout.write_all(b"NO\n").unwrap();
+    }
+}

50A.rs

@@ -0,0 +1,26 @@
+use std::io::{self, Read, Write};
+
+fn main() {
+    let mut stdin  = io::stdin();
+    let mut stdout = io::stdout();
+
+    let mut input = String::new();
+    stdin.read_to_string(&mut input).unwrap();
+
+    let mut inputs = input.split_whitespace();
+    let input1 = inputs.next().unwrap();
+    let input2 = inputs.next().unwrap();
+
+    let width = input1.parse::<i32>().unwrap();
+    let height: i32 = input2.parse().unwrap();
+
+    let result =
+        if width % 2 == 0 || height % 2 == 0 {
+            width * height / 2
+        }
+        else {
+            (width * height - 1) / 2
+        };
+
+    stdout.write_all(format!("{}\n", result).as_ref()).unwrap();
+}