diff --git a/test/5/1.py b/test/5/1.py
new file mode 100644
index 0000000..bcd353e
--- /dev/null
+++ b/test/5/1.py
@@ -0,0 +1,4 @@
+n = int(input())
+print(bin(n)[2:])
+print(oct(n)[2:])
+print(hex(n)[2:])
\ No newline at end of file
diff --git a/test/5/2.py b/test/5/2.py
new file mode 100644
index 0000000..af325c6
--- /dev/null
+++ b/test/5/2.py
@@ -0,0 +1,2 @@
+for i in range(33, 127):
+    print(str(i) + " " + chr(i))
\ No newline at end of file
diff --git a/test/5/3.py b/test/5/3.py
new file mode 100644
index 0000000..5e14b38
--- /dev/null
+++ b/test/5/3.py
@@ -0,0 +1,7 @@
+s = input()
+print(str(s.encode("GB2312"))[2:-1])
+print(str(s.encode("GBK"))[2:-1])
+print(str(s.encode("GB18030"))[2:-1])
+print(str(s.encode("UTF-8"))[2:-1])
+print(str(s.encode("UTF-16-BE"))[2:-1])
+print(str(s.encode("UTF-16-LE"))[2:-1])
\ No newline at end of file
diff --git a/test/5/4.py b/test/5/4.py
new file mode 100644
index 0000000..66d6387
--- /dev/null
+++ b/test/5/4.py
@@ -0,0 +1,6 @@
+s = input()
+for i in s:
+    if (ord(i) >= ord('a') and ord(i) <= ord('z')):
+        print(chr(ord(i) - 32), end="")
+    else:
+        print(i, end="")
diff --git a/test/5/5.py b/test/5/5.py
new file mode 100644
index 0000000..efe6f19
--- /dev/null
+++ b/test/5/5.py
@@ -0,0 +1,10 @@
+def b(x):
+    s = ""
+    while (x):
+        s += str(x % 2)
+        x //= 2
+    return s[::-1]
+
+
+a = int(input())
+print(b(a))
\ No newline at end of file
diff --git a/test/5/6,7.py b/test/5/6,7.py
new file mode 100644
index 0000000..7502673
--- /dev/null
+++ b/test/5/6,7.py
@@ -0,0 +1,30 @@
+def b(x):
+    if (x == 0):
+        return "0"
+    s = ""
+    while (x):
+        s += str(x % 2)
+        x //= 2
+    return s[::-1]
+
+
+def binx(x):
+    x -= int(x)
+    if (x == 0):
+        return ""
+    binn = "."
+    while x:
+        x *= 2
+        if x >= 1:
+            binn += "1"
+        else:
+            binn += "0"
+        x -= int(x)
+        if (len(binn) >= 9):
+            return binn
+    return binn
+
+
+a = float(input())
+print(b(int(a)), end="")
+print(binx(a))
\ No newline at end of file