diff --git a/001/solution.rs b/001/main.rs
similarity index 100%
rename from 001/solution.rs
rename to 001/main.rs
diff --git a/002/solution.rs b/002/main.rs
similarity index 100%
rename from 002/solution.rs
rename to 002/main.rs
diff --git a/003/solution.rs b/003/main.rs
similarity index 100%
rename from 003/solution.rs
rename to 003/main.rs
diff --git a/004/solution.rs b/004/main.rs
similarity index 100%
rename from 004/solution.rs
rename to 004/main.rs
diff --git a/005/solution.rs b/005/main.rs
similarity index 100%
rename from 005/solution.rs
rename to 005/main.rs
diff --git a/006/solution.rs b/006/main.rs
similarity index 100%
rename from 006/solution.rs
rename to 006/main.rs