ABC 044, c and d unfinished

atcoder/beginner_contests/abc044/src/bin/b.rs

@@ -0,0 +1,22 @@
+use proconio::input;
+
+fn main() {
+    input!{
+        w: String,
+    };
+
+    let mut counts = [0; 26];
+    for c in w.chars() {
+        let i = c.to_digit(36).unwrap();
+        counts[(i - 10) as usize] += 1;
+    }
+
+    for count in counts.iter() {
+        if count % 2 != 0 {
+            println!("No");
+            return;
+        }
+    }
+
+    println!("Yes");
+}