diff --git a/zeta_python/completed/1912.py b/zeta_python/completed/1912.py
new file mode 100644
index 0000000..7913112
--- /dev/null
+++ b/zeta_python/completed/1912.py
@@ -0,0 +1,20 @@
+def solve(N, A):
+    T = [0] * N
+    cum = [0] * N
+    T[0] = A[0]
+    cum[0] = A[0]
+    for i in range(1, N):
+        cumsum = A[i] + cum[i - 1]
+        if T[i - 1] > cumsum:  # condition
+            if T[i - 1] < 0:
+                cum[i] = T[i] = max((A[i], T[i - 1]))
+            else:
+                cum[i] = max((cumsum, A[i]))  # if ordinary
+                T[i] = T[i - 1]
+        else:
+            T[i] = cum[i] = max((cumsum, A[i]))
+    return T[-1]
+
+
+if __name__ == '__main__':
+    print(solve(int(input()), list(map(int, input().split()))))