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

storage/zeta/py/completed/1247.py

@@ -0,0 +1,13 @@
+import sys
+for _ in range(3):
+    N = int(sys.stdin.readline())
+    t = 0
+    for i in range(N):
+        t += int(sys.stdin.readline())
+        
+    if t > 0:
+        print("+")
+    elif t < 0:
+        print("-")
+    else:
+        print("0")