upd

2. problem_cf/solution.c

@@ -41,14 +41,25 @@ int main() {
 }
 
 void cf(ull x, ull y) {
-  ull a = (x > y) ? x : y;
-  ull b = (x < y) ? x : y;
+  // ull a = (x > y) ? x : y;
+  // ull b = (x < y) ? x : y;
+
+  ull a = x;
+  ull b = y;
+
+  // printf("a = %llu, b = %llu", a, b);
 
   ull q = a / b;
   ull r = a % b;
+  printf("%llu ", q);
 
   while (r > 0) {
-
+    a = b;
+    b = r;
+    q = a / b;
+    r = a % b;
+    // printf("a = %llu, b = %llu", a, b);
+    printf("%llu ", q);
   }
 }