diff --git a/src/aoc/y2022/day25.rs b/src/aoc/y2022/day25.rs
new file mode 100644
index 0000000..9455e84
--- /dev/null
+++ b/src/aoc/y2022/day25.rs
@@ -0,0 +1,52 @@
+fn desnafu(input: String) -> i32 {
+    let mut ret = 0;
+    let mut amt = 1;
+
+    for char in input.chars().rev() {
+        let digit = match char {
+            '-' => -1,
+            '=' => -2,
+            i => i.to_digit(10).unwrap() as i32,
+        };
+        ret += digit * amt;
+        amt *= 5;
+    }
+
+    ret
+}
+
+fn ensnafu(num: i64) -> String {
+    if num == 0 {
+        return "0".to_string();
+    }
+    let mut amt = 5;
+    let mut count = 2;
+    while num / amt != 0 {
+        amt *= 5;
+        count += 1;
+    }
+    println!("{}, {} / {}", num, amt, count);
+
+    let mut ret = String::with_capacity(count);
+    while count > 0 {
+        // AAAAAA
+    }
+}
+
+pub fn main(data: crate::DataIn) -> String {
+    let mut ret: i64 = 0;
+    for line in data {
+        print!("{:10} ", line);
+        let res = desnafu(line);
+        println!("{:10}", res);
+        ret += res as i64;
+    }
+    println!("{}", ret);
+    return ensnafu(ret);
+}
+
+inventory::submit!(crate::AoCDay {
+    year: "2022",
+    day: "25",
+    func: main,
+});
diff --git a/src/aoc/y2022/mod.rs b/src/aoc/y2022/mod.rs
index 7dfb4b2..a3913ff 100644
--- a/src/aoc/y2022/mod.rs
+++ b/src/aoc/y2022/mod.rs
@@ -15,3 +15,4 @@ pub mod day14;
 pub mod day15;
 pub mod day16;
 pub mod day17;
+pub mod day25;