diff --git a/rust/day2/src/main.rs b/rust/day2/src/main.rs
index 2307fe5..8d525ec 100644
--- a/rust/day2/src/main.rs
+++ b/rust/day2/src/main.rs
@@ -1,10 +1,13 @@
-use crate::rps::get_converter;
-
 use std::collections::HashMap;
 mod rps;
 
 fn main()
 {
     let converter : HashMap<char, rps::RockPaperScissors> = rps::get_converter();
-    println!("Hello world!");
+    let player = converter.get(&'Y').unwrap().battle(converter.get(&'A').unwrap());
+    println!("First battle = {}", player);
+    let player = converter.get(&'X').unwrap().battle(converter.get(&'B').unwrap());
+    println!("Second battle = {}", player);
+    let player = converter.get(&'Z').unwrap().battle(converter.get(&'C').unwrap());
+    println!("Third battle = {}", player);
 }
\ No newline at end of file
diff --git a/rust/day2/src/rps.rs b/rust/day2/src/rps.rs
index 03ac721..453251c 100644
--- a/rust/day2/src/rps.rs
+++ b/rust/day2/src/rps.rs
@@ -1,9 +1,19 @@
 use std::collections::HashMap;
 
+#[derive(Copy, Clone, PartialEq, Eq, Hash)]
 pub enum RockPaperScissors {
-    Rock,
-    Paper,
-    Scissors
+    Rock = 0,
+    Paper = 1,
+    Scissors = 2
+}
+
+impl RockPaperScissors{
+    pub fn battle(&self, other: &RockPaperScissors) -> u64
+    {
+        let weight = get_weight();
+        let tab = weight.get(&self).unwrap();
+        (*self as u64) + 1 + (tab[*other as usize] as u64)
+    }
 }
 
 pub fn get_converter() -> HashMap<char, RockPaperScissors> {
@@ -15,4 +25,12 @@ pub fn get_converter() -> HashMap<char, RockPaperScissors> {
         ('Y', RockPaperScissors::Paper),
         ('Z', RockPaperScissors::Scissors),
     ])
+}
+
+fn get_weight() -> HashMap<RockPaperScissors, [u8; 3]> {
+    HashMap::from([
+        (RockPaperScissors::Rock, [3,0,6]),
+        (RockPaperScissors::Paper, [6,3,0]),
+        (RockPaperScissors::Scissors, [0,6,3]),
+    ])
 }
\ No newline at end of file