diff --git a/week_0/ex_0_advanced/ex_0_advanced_runfile.py b/week_0/ex_0_advanced/ex_0_advanced_runfile.py
index ca4c2ba..22d911f 100644
--- a/week_0/ex_0_advanced/ex_0_advanced_runfile.py
+++ b/week_0/ex_0_advanced/ex_0_advanced_runfile.py
@@ -1 +1,23 @@
-#YOUR CODE FOR EX_0 ADVANCED HERE
\ No newline at end of file
+#
+import math
+DNAseq = input("Enter DNA sequence")
+DNAseq = DNAseq.upper()
+
+if any(words not in "ATGC" for words in DNAseq):
+    print("wrong sequence")
+else:
+    lenght = len(DNAseq)
+    A = DNAseq.count('A')
+    C = DNAseq.count('C')
+    G = DNAseq.count('G')
+    T = DNAseq.count('T')
+    GC = G + C
+    GCratio = GC / lenght
+    GCpercent = GCratio * 100
+    print(f"The lenght is: {lenght}")
+    print(f"adenine is: {A}")
+    print(f"cytosine is: {C}")
+    print(f"guanine is: {G}")
+    print(f"thymine is: {T}")
+    print(f"GC content is: {GCpercent}")
+
diff --git a/week_0/ex_0_beginner/ex_0_beginner_runfile.py b/week_0/ex_0_beginner/ex_0_beginner_runfile.py
index b3db532..715a65f 100644
--- a/week_0/ex_0_beginner/ex_0_beginner_runfile.py
+++ b/week_0/ex_0_beginner/ex_0_beginner_runfile.py
@@ -1,5 +1,6 @@
 import this
 
-print("\n"+"TYPE YOUR RESPONSE TO PROMPT 1 HERE")
+print("\n"+"I am Silvia, research engineer in CRCT. I try to learn Python to easly analyse and visualise data")
+
+print("\n"+"Long time ago")
 
-print("\n"+"TYPE YOUR RESPONSE TO PROMPT 2 HERE")
\ No newline at end of file
diff --git a/week_0/ex_0_beginner/ex_0_beginner_submit.txt b/week_0/ex_0_beginner/ex_0_beginner_submit.txt
index b4d44a7..90f642f 100644
--- a/week_0/ex_0_beginner/ex_0_beginner_submit.txt
+++ b/week_0/ex_0_beginner/ex_0_beginner_submit.txt
@@ -1 +1,25 @@
-Copy and paste output of ex_0_beginner_runfile.py below:
+Beautiful is better than ugly.
+Explicit is better than implicit.
+Simple is better than complex.
+Complex is better than complicated.
+Flat is better than nested.
+Sparse is better than dense.
+Readability counts.
+Special cases aren't special enough to break the rules.
+Although practicality beats purity.
+Errors should never pass silently.
+Unless explicitly silenced.
+In the face of ambiguity, refuse the temptation to guess.
+There should be one-- and preferably only one --obvious way to do it.
+Although that way may not be obvious at first unless you're Dutch.
+Now is better than never.
+Although never is often better than *right* now.
+If the implementation is hard to explain, it's a bad idea.
+If the implementation is easy to explain, it may be a good idea.
+Namespaces are one honking great idea -- let's do more of those!
+
+I am Silvia, research engineer in CRCT. I try to learn Python to easly analyse and visualise data
+
+Long time ago
+
+
diff --git a/week_0/ex_0_intermediate/ex_0_intermediate_runfile.py b/week_0/ex_0_intermediate/ex_0_intermediate_runfile.py
index 919a326..4ced26f 100644
--- a/week_0/ex_0_intermediate/ex_0_intermediate_runfile.py
+++ b/week_0/ex_0_intermediate/ex_0_intermediate_runfile.py
@@ -1 +1,14 @@
-#YOUR CODE FOR EX_0 INTERMEDIATE HERE
\ No newline at end of file
+#
+import math
+initialcount = input("Enter the initial count: ")
+finalcount = input("Enter the final count:")
+time = input("Enter the time:")
+if  initialcount.isdigit() and finalcount.isdigit() and time.isdigit():
+    if (int(finalcount) > int(initialcount)):
+        GrowthRate = math.log(int(finalcount)) - math.log(int(initialcount)) / int(time)
+        print(GrowthRate)
+    else:
+        print("invalid input")
+else:
+    print("invalid input")
+