034 ok

034/main.rs

@@ -0,0 +1,35 @@
+fn ds(n: u32) -> Vec<u32> {
+    let mut res = Vec::new();
+    let mut a = n;
+    while a > 0 {
+        res.push(a % 10);
+        a/=10;
+    }
+    res
+}
+
+fn fc(n: u32) -> u32 {
+    if n == 0 { return 1; }
+    return n * fc(n-1);
+}
+
+fn test(n: u32) -> bool {
+    let d = ds(n);
+    let mut sum = 0;
+    for k in d {
+        sum += fc(k);
+    }
+    return n == sum;
+}
+
+
+fn main() {
+    let mut sum = 0;
+    for n in 3..10_000_000 {
+        if test(n) { 
+            println!("{}", n);
+            sum += n
+        }
+    }
+    println!("sum: {}", sum);
+}