diff --git a/TP3/main.py b/TP3/main.py
index 4cb5f70..f730e8e 100644
--- a/TP3/main.py
+++ b/TP3/main.py
@@ -123,13 +123,15 @@ def binomes(n):
 def syracuse(n):
     if n%2:
         return 3*n + 1
-    return n/2
+    return n>>1
 
 
-def NbrEtapes(n):
+def NbrEtapes(n, quiet=True):
     l=n
     i=0
     while l!=1:
+        if not quiet:
+            print(l)
         l=syracuse(l)
         i+=1
     return i
@@ -138,5 +140,32 @@ def printNbrEtapes(n):
     print(a)
     return a
 
+def test(n):
+    for i in range(n):
+        print(NbrEtapes(3**i), NbrEtapes(3**i + 1))
+
 #Exercice bonus : Palindromes et nombres de Lychrel
 
+def palindrome(l):
+    return l == l[::-1]
+
+def ldec(n):
+    return list(map(int, str(n)))
+
+def NbrPal(N):
+    #Methode ~bourrin~:
+    return sum([palindrome(ldec(i)) for i in range(N)])
+
+def f(n):
+    return n + int(str(n)[::-1])
+
+def hauteur(n):
+    N = n
+    c = 0
+    while not palindrome(ldec(N)):
+        N = f(N)
+        c += 1
+        if c>4999 and c%5000==0 and not input("continuer ? (oui/non) >").lower().startswith('o'):
+            break
+    print(N)
+    return c
\ No newline at end of file
diff --git a/TP3_bonus/TP3 instructions conditionnelles bonus.pdf b/TP3_bonus/TP3 instructions conditionnelles bonus.pdf
new file mode 100644
index 0000000..536f7be
Binary files /dev/null and b/TP3_bonus/TP3 instructions conditionnelles bonus.pdf differ
diff --git a/TP3_bonus/main.py b/TP3_bonus/main.py
new file mode 100644
index 0000000..8d1c8b6
--- /dev/null
+++ b/TP3_bonus/main.py
@@ -0,0 +1 @@
+