Feat: works

Author: S1ro1

.gitignore

@@ -1 +1,2 @@
 submission.*
+target/

src/service/mod.rs

@@ -118,7 +118,7 @@ pub async fn submit_solution<P: AsRef<Path>>(
         "{}/{}/{}/{}",
         base_url,
         leaderboard.to_lowercase(),
-        gpu.to_lowercase(),
+        gpu,
         submission_mode.to_lowercase()
     );