diff --git a/.gitignore b/.gitignore
index 7242e5c..cfa9fe2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 .idea/
-output/
\ No newline at end of file
+output/
+venv
+.venv
\ No newline at end of file
diff --git a/zeta_python/1562.py b/zeta_python/1562.py
new file mode 100644
index 0000000..d20396c
--- /dev/null
+++ b/zeta_python/1562.py
@@ -0,0 +1,31 @@
+N = int(input())
+#3차원
+temper = [0 for i in range(N)]
+count = 0
+
+def C(t):
+    T = [0 for i in range(10)]
+    for i in t:
+        T[i] = True
+    if all(T) is True:
+        return True
+    else:
+        return False
+
+def I(l, k):
+    global count
+    if 0 <= k <= 9:
+        temper[l - 1] = k
+        if l == 1:
+            if C(temper):
+                count += 1
+                count %= 1000000000
+        else:
+            I(l - 1, k - 1)
+            I(l - 1, k + 1)
+    else:
+        return
+
+for i in range(1,10):
+    I(N, i)
+print(count % 1000000000)
\ No newline at end of file
diff --git a/zeta_python/completed/10844.py b/zeta_python/completed/10844.py
new file mode 100644
index 0000000..1e86f48
--- /dev/null
+++ b/zeta_python/completed/10844.py
@@ -0,0 +1,20 @@
+N = int(input())
+
+Mem = [[0] * 10 for i in range(100)]
+
+
+def I(l, k):
+    if 0 <= k <= 9:
+        if l == 1:
+            return 1
+        elif Mem[l-1][k] != 0:
+            return Mem[l-1][k]
+        else:
+            temp = (I(l - 1, k - 1) + I(l - 1, k + 1)) % 1000000000
+            Mem[l-1][k] = temp
+            return temp
+    else:
+        return 0
+
+
+print(sum(I(N, i) for i in range(1, 10)) % 1000000000)
diff --git a/zeta_python/completed/1712.py b/zeta_python/completed/1712.py
new file mode 100644
index 0000000..684c998
--- /dev/null
+++ b/zeta_python/completed/1712.py
@@ -0,0 +1,2 @@
+a,b,c = map(int, input().split())
+print(int(a/(c-b)+1)) if c-b>0 else print(-1)
diff --git a/zeta_python/completed/2780.py b/zeta_python/completed/2780.py
new file mode 100644
index 0000000..6918bdc
--- /dev/null
+++ b/zeta_python/completed/2780.py
@@ -0,0 +1,38 @@
+Mem = [[0] * 10 for i in range(1000)]
+
+
+def I(l, k):
+    if l == 1:
+        return 1
+    else:
+        if Mem[l - 1][k] != 0:
+            return Mem[l - 1][k]
+        if k == 1:
+            temp = (I(l - 1, 2) + I(l - 1, 4)) % 1234567
+        elif k == 2:
+            temp = (I(l - 1, 1) + I(l - 1, 3) + I(l - 1, 5)) % 1234567
+        elif k == 3:
+            temp = (I(l - 1, 2) + I(l - 1, 6)) % 1234567
+        elif k == 4:
+            temp = (I(l - 1, 1) + I(l - 1, 5) + I(l - 1, 7)) % 1234567
+        elif k == 5:
+            temp = (I(l - 1, 2) + I(l - 1, 4) + I(l - 1, 6) + I(l - 1, 8)) % 1234567
+        elif k == 6:
+            temp = (I(l - 1, 3) + I(l - 1, 5) + I(l - 1, 9)) % 1234567
+        elif k == 7:
+            temp = (I(l - 1, 4) + I(l - 1, 8) + I(l - 1, 0)) % 1234567
+        elif k == 8:
+            temp = (I(l - 1, 5) + I(l - 1, 7) + I(l - 1, 9)) % 1234567
+        elif k == 9:
+            temp = (I(l - 1, 6) + I(l - 1, 8)) % 1234567
+        elif k == 0:
+            temp = (I(l - 1, 7)) % 1234567
+        Mem[l - 1][k] = temp
+        return temp
+
+
+T = int(input())
+Ns = [int(input()) for i in range(T)]
+
+for n in Ns:
+    print(sum(I(n, i) for i in range(10))%1234567)
diff --git a/zeta_python/stdin.txt b/zeta_python/stdin.txt
index a45ca11..3cacc0b 100644
--- a/zeta_python/stdin.txt
+++ b/zeta_python/stdin.txt
@@ -1,2 +1 @@
-5 21
-1 3 5 9 10
\ No newline at end of file
+12
\ No newline at end of file