ABC 048, finished all with help of editorial

atcoder/beginner_contests/abc048/src/bin/d.rs

@@ -0,0 +1,13 @@
+use proconio::input;
+
+fn main(){
+    input!{
+        s: String,
+    };
+
+    if (s.len() % 2 == 0) ^ (s.chars().next().unwrap() == s.chars().last().unwrap()) {
+        println!("Second");
+    } else {
+        println!("First");
+    }
+}