diff --git a/src/problem/mod.rs b/src/problem/mod.rs
index fb72952..450b1e2 100644
--- a/src/problem/mod.rs
+++ b/src/problem/mod.rs
@@ -538,3 +538,5 @@ mod p3305_count_of_substrings_containing_every_vowel_and_k_consonants_i;
 mod p3306_count_of_substrings_containing_every_vowel_and_k_consonants_ii;
 
 mod p3340_check_balanced_string;
+
+mod p3110_score_of_a_string;
diff --git a/src/problem/p3110_score_of_a_string.rs b/src/problem/p3110_score_of_a_string.rs
new file mode 100644
index 0000000..4bf6921
--- /dev/null
+++ b/src/problem/p3110_score_of_a_string.rs
@@ -0,0 +1,28 @@
+/**
+ * [3110] Score of a String
+ */
+pub struct Solution {}
+
+// submission codes start here
+
+impl Solution {
+    pub fn score_of_string(s: String) -> i32 {
+        s.bytes()
+            .zip(s.bytes().skip(1))
+            .map(|(first, second)| first.abs_diff(second) as i32)
+            .sum::<i32>()
+    }
+}
+
+// submission codes end
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_3110() {
+        assert_eq!(13, Solution::score_of_string("hello".to_owned()));
+        assert_eq!(50, Solution::score_of_string("zaz".to_owned()));
+    }
+}