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

storage/zeta/py/completed/1541.py

@@ -0,0 +1,11 @@
+def solve(exp):
+    t = exp.split("-")
+    S = 0
+    S += sum(map(int, t[0].split("+")))
+    for i in range(1, len(t)):
+        S -= sum(map(int, t[i].split("+")))
+    return S
+
+
+if __name__ == '__main__':
+    print(solve(input()))