complete 1874.py and 10773.py

zeta_python/completed/10773.py

@@ -0,0 +1,13 @@
+def solve(K, I):
+    stack = list()
+    for i in I:
+        if i:
+            stack.append(i)
+        else:
+            stack.pop()
+    return sum(stack)
+
+
+if __name__ == '__main__':
+    K = int(input())
+    print(solve(K, [int(input()) for _ in range(K)]))

zeta_python/completed/1874.py

@@ -0,0 +1,22 @@
+def solve(N, I):
+    ret = []
+    stack = []
+    c = 0
+    for i, x in enumerate(I):
+        while c < x:
+            c += 1
+            stack.append(c)
+            ret.append("+")
+
+        if stack[-1] == x:
+            stack.pop()
+            ret.append("-")
+
+        else:
+            return "NO"
+    return "\n".join(ret)
+
+
+if __name__ == '__main__':
+    N = int(input())
+    print(solve(N, list(int(input()) for _ in range(N))))