diff --git a/H071211055/Materi_CP/a5.py b/H071211055/Materi_CP/a5.py
new file mode 100644
index 0000000..e2c4f00
--- /dev/null
+++ b/H071211055/Materi_CP/a5.py
@@ -0,0 +1,13 @@
+def marsExploration(s):
+    c=0
+    for i in range(0, len(s), 3):
+        print(i)
+        if   s[i+0]!="S":
+            c+=1
+        elif s[i+1]!="O": 
+            c+=1
+        elif s[i+2]!="S": 
+            c+=1
+    return c
+s = input()
+print(marsExploration(s))
\ No newline at end of file
diff --git a/H071211055/Materi_CP/b2.py b/H071211055/Materi_CP/b2.py
new file mode 100644
index 0000000..50dcccc
--- /dev/null
+++ b/H071211055/Materi_CP/b2.py
@@ -0,0 +1,14 @@
+n = int(input())
+stick = list(map(int, input().rstrip().split()))
+
+while len(stick):
+    print(len(stick))
+    stick2 = []
+    
+    for i in stick:
+        stick2.append(i - min(stick))
+    # stick = [i - min(stick) for i in stick]
+    stick = stick2
+    c = min(stick)
+    for j in range(stick.count(c)):
+        stick.remove(c)