diff --git a/TP3_bonus/main.py b/TP3_bonus/main.py
index 8d1c8b6..c7972e2 100644
--- a/TP3_bonus/main.py
+++ b/TP3_bonus/main.py
@@ -1 +1,52 @@
- 
+# Question 1:
+
+
+def tempsdevol(c):
+    u, n = c, 0
+    while u != 1:
+        if u % 2:
+            u = 3*u + 1
+        else:
+            u = u//2
+        n += 1
+    return n
+
+# Question 2
+
+
+def altitude(c):
+    u, umax = c, c
+    while u != 1:
+        if u % 2:
+            u = 3*u + 1
+        else:
+            u = u//2
+        if u > umax:
+            umax = u
+    return umax
+
+# Question 3
+# a)
+
+
+def tempsdarret(c):
+    u, n, nmax = c, 0, 0
+    while u != 1:
+        n += 1
+        if u % 2:
+            u = 3*u + 1
+        else:
+            u = u//2
+        if u >= c:
+            nmax = n
+    return nmax
+
+# b)
+import time
+
+
+def verification(m):# m=1000000 -> 60 sec
+    start = time.time()
+    for c in range(2, m+1):
+        tempsdarret(c)
+    return time.time() - start