diff --git a/day-04/bin/part01_rs b/day-04/bin/part01_rs
new file mode 100755
index 0000000..ea824c5
Binary files /dev/null and b/day-04/bin/part01_rs differ
diff --git a/day-04/src/part01.c b/day-04/src/part01.c
index db8ef6a..fd66db2 100644
--- a/day-04/src/part01.c
+++ b/day-04/src/part01.c
@@ -31,4 +31,6 @@ int main(int argc, char *argv[]){
 
 
   printf("Answer: \nXXXX\n");
-}
\ No newline at end of file
+}
+
+
diff --git a/day-04/src/part01.rs b/day-04/src/part01.rs
index e7a11a9..f72b9e2 100644
--- a/day-04/src/part01.rs
+++ b/day-04/src/part01.rs
@@ -1,3 +1,82 @@
-fn main() {
-    println!("Hello, world!");
+use std::io;
+use std::io::BufRead;
+
+const DEBUG: bool = true;
+
+struct Card {
+    card_number: u32,
+    match_count: u32,
+    copies: u32,
+}
+
+fn main() {
+    let mut lines_processed = 0;
+    let mut cards: Vec<Card> = Vec::new();
+
+
+    let mut line = String::new();
+    while io::stdin().lock().read_line(&mut line).unwrap() > 0 {
+        println!("input {}", line.trim());
+        let card_strings = line.trim().split_once(':').unwrap();
+        //dbg!(card_strings);
+        let card_number = card_strings.0[5..].trim().parse::<u32>().unwrap();
+        let card_data_string = card_strings.1.trim().split_once('|').unwrap();
+
+        let winning_numbers: Vec<u32> = card_data_string.0
+                                            .split_whitespace()
+                                            .map(|s| s.parse().unwrap())
+                                            .collect();
+        let my_numbers: Vec<u32> = card_data_string.1
+                                                   .split_whitespace()
+                                                   .map(|s| s.parse().unwrap())
+                                                   .collect();
+
+        //dbg!(my_numbers.iter().filter(|x| winning_numbers.contains(x)).cloned().collect::<Vec<u32>>());                                                   
+        let match_count: u32 = my_numbers.iter().filter(|x| winning_numbers.contains(x)).count().try_into().unwrap();
+
+        println!("------------ card_number: {}, match_count: {}\n", card_number, match_count);
+
+        cards.push(Card {
+            card_number: card_number,
+            match_count: match_count,
+            copies: 1,
+        });
+
+        for card in cards.iter() {
+            println!("CARD card: {}, match count: {}", card.card_number, card.match_count);
+        }
+
+
+        //dbg!(winning_numbers, my_numbers, match_count);
+        //.map(|x| x.parse).unwrap())
+        //.collect()
+
+        // dbg!( card_data_string.0
+        //                       .trim()
+        //                       .split_whitespace()
+        //                       //.split(' ').map(|s| s.trim())
+        //                       .filter(|s| !s.is_empty())
+        //                       .map(|s| s.parse().unwrap())
+        //                       .collect()
+        //                       //.map(|x| x.parse).unwrap())
+        //                       //.collect()
+        //                      );
+        //let winning_numbers: Vec<u32> = card_data_string.0.trim().split_whitespace().iter().flat_map(|s| s.parse().ok()).collect();
+        let my_numbers = card_data_string.1.trim();
+
+        dbg!(card_number);
+        //dbg!(winning_numbers, my_numbers);
+        lines_processed += 1;
+        line.clear()
+    }
+
+    println!("\n Ingested {} Lines", lines_processed);
+    println!("===================================");
+
+    // Insert processing code
+
+    println!("\n Processed XXX");
+    println!("===================================");
+
+    println!("Answer: \nXXXX");
 }