restructure zeta/** to storage/zeta/**

storage/zeta/py/completed/15654.py

@@ -0,0 +1,10 @@
+N, M = map(int, input().split())
+trace = [(sorted(list(map(int, input().split()))), M, [])]
+
+while trace:
+    n, m, d = trace.pop()
+    for i in range(len(n) - 1, -1, -1):
+        trace.append((n[:i] + n[i + 1:], m - 1, d + [n[i]]))
+    if m == 0:
+        print(" ".join(map(str, d)))
+# 아마도 백트래킹일거임 아마도 그럼 ㅇㅇ