ABC 045, finished completely

atcoder/beginner_contests/abc045/src/bin/c.rs

@@ -1,5 +1,12 @@
 use proconio::input;
 
+fn dfs(digits: &Vec<u64>, i: usize, sum: u64, counter: u64) -> u64{
+    if i < digits.len(){
+        dfs(digits, i + 1, sum + counter, digits[i]) + dfs(digits, i + 1, sum, counter * 10 + digits[i])
+    } else{
+        sum + counter
+    }
+}
 
 fn main() {
     input!{
@@ -7,8 +14,7 @@ fn main() {
     };
 
     let ns : Vec<u64> = s.chars().map(|c| u64::from(c.to_digit(10).unwrap())).collect();
-    let nns = vec![ns];
-    let mut result : u64 = 0;
+    let result = dfs(&ns, 1, 0, ns[0]);
 
     println!("{}", {result});
-}
+}