diff --git a/zeta_python/17386.py b/zeta_python/17386.py
new file mode 100644
index 0000000..3f2e47f
--- /dev/null
+++ b/zeta_python/17386.py
@@ -0,0 +1,35 @@
+x1, y1, x2, y2 = map(int, input().split())
+x3, y3, x4, y4 = map(int, input().split())
+
+vx1, vy1 = x2 - x1, y2 - y1
+vx2, vy2 = x4 - x3, y4 - y3
+if vx1 == 0 and vy1 == 0:
+    print(0)
+elif vx1 == 0 or vy1 == 0:
+    if vx1 == 0:
+        rx = x1
+        ry = (vy2/vx2) * (rx - x3) + y3
+
+        t0 = (ry - y1) / vy1
+        t1 = (rx - x3) / vy2
+    else:
+        rx = x3
+        ry = (vy1 / vx1) * (rx-x1) + y1
+
+        t0 = (rx - x1) / vx1
+        t1 = (ry - y3) / vy2
+    if t0 < 0 or t0 > 1 or t1 < 0 or t1 > 1: print(0)
+    else: print(1)
+else:
+    a0 = vy1 / vx1
+    a1 = vy2 / vx2
+
+    rx = (a0 * x1 - a1 * x3 + y3 - y1 )/ (a0 - a1)
+    ry = a0 * (rx - x1) + y1
+
+    t0 = (rx - x1) / vx1
+    t1 = (rx - x3) / vx2
+    if a0 == a1: print(0)
+    elif t0 < 0 or t0 > 1 or t1 < 0 or t1 > 1: print(0)
+    else:
+        print(1)
\ No newline at end of file
diff --git a/zeta_python/2162.py b/zeta_python/2162.py
new file mode 100644
index 0000000..ad4cc60
--- /dev/null
+++ b/zeta_python/2162.py
@@ -0,0 +1 @@
+T = int(input())
\ No newline at end of file
diff --git a/zeta_python/completed/1011.py b/zeta_python/completed/1011.py
new file mode 100644
index 0000000..1b608f1
--- /dev/null
+++ b/zeta_python/completed/1011.py
@@ -0,0 +1,16 @@
+import math
+T = int(input())
+
+for i in range(T):
+    x, y = map(int, input().split())
+    distance = y - x
+    disted = distance ** (1 / 2)
+    upper = math.ceil(disted)
+
+    lowersq = (upper - 1)**2
+    uppersq = upper**2
+
+    if (lowersq + uppersq)/2 <= distance:
+        print(upper * 2 -1)
+    else:
+        print(upper * 2 - 2)
diff --git a/zeta_python/completed/16931.py b/zeta_python/completed/16931.py
new file mode 100644
index 0000000..fa35aa8
--- /dev/null
+++ b/zeta_python/completed/16931.py
@@ -0,0 +1,11 @@
+N, M = map(int, input().split())
+sqs = [[0] + list(map(int, input().split())) + [0] for i in range(N)]
+sqs.insert(0, list(0 for i in range(M + 2)))
+sqs.append(list(0 for i in range(M + 2)))
+
+total = 2 * N * M
+for i in range(N + 1):
+    for j in range(M + 1):
+        total += abs(sqs[i][j] - sqs[i][j + 1])
+        total += abs(sqs[i][j] - sqs[i + 1][j])
+print(total)
diff --git a/zeta_python/completed/2166.py b/zeta_python/completed/2166.py
new file mode 100644
index 0000000..f8e97e6
--- /dev/null
+++ b/zeta_python/completed/2166.py
@@ -0,0 +1,5 @@
+N = int(input())
+points = [list(map(int, input().split())) for i in range(N)]
+points += [points[0]]
+N +=1
+print("%.1f" % (abs(sum(points[i][0] * points[j][1] for i, j in zip(range(N - 1), range(1, N))) - sum(points[j][0] * points[i][1] for i, j in zip(range(N - 1), range(1, N))))/2))
diff --git a/zeta_python/completed/3046.py b/zeta_python/completed/3046.py
new file mode 100644
index 0000000..e73e06a
--- /dev/null
+++ b/zeta_python/completed/3046.py
@@ -0,0 +1,2 @@
+R1, S = map(int, input().split())
+print(2 * S - R1)