feat: new task

test.js

@@ -0,0 +1,21 @@
+function cars(A = [0, 1, 0, 1, 1]) {
+  let s = 0;
+  const countedA = A.reverse().map(x => {
+    if (!x) {
+      return 0
+    }
+    s++;
+    return s
+  }).reverse();
+
+  let sum = 0;
+  while(countedA.length) {
+    const car = countedA.shift();
+    if(car) {
+      continue
+    }
+    const count = countedA.find(n => n > 0);
+    sum = sum + count;
+  }
+  return sum
+}