diff --git a/problems/easy/easy_q2.py b/problems/easy/easy_q2.py
index c0c0c7c..ac0a9c6 100644
--- a/problems/easy/easy_q2.py
+++ b/problems/easy/easy_q2.py
@@ -37,6 +37,8 @@ def largest_of_two(a, b):
         return b
         print(num2,"larger")
     
+ 
+ 
 if __name__ == "__main__":
     num1 = int(input("Enter the First Number :"))
     num2 = int(input("Enter the Second  :"))
@@ -45,4 +47,4 @@ def largest_of_two(a, b):
  
  
  
- 
+ 
\ No newline at end of file
diff --git a/problems/easy/easy_q3.py b/problems/easy/easy_q3.py
index 33eded1..e874a42 100644
--- a/problems/easy/easy_q3.py
+++ b/problems/easy/easy_q3.py
@@ -1,6 +1,12 @@
 # Leap Year or Not: Write a program to determine whether a given year is a leap year.
 def is_leap_year(year):
  
+    if year % 4 == 0 or year % 100 == 0 or year % 400 == 0:   
+        return "Leap Year"
+    else:
+         return "Not a Leap Year"
+ 
+ 
     if year % 4 == 0:
        if year % 100 == 0:
            return "Not a Leap Year"
@@ -35,6 +41,7 @@ def is_leap_year(year):
  
  
  
+ 
 if __name__ == "__main__":
     
     num = int(input("Enter the number :"))
diff --git a/problems/easy/easy_q5.py b/problems/easy/easy_q5.py
index cec150a..794055c 100644
--- a/problems/easy/easy_q5.py
+++ b/problems/easy/easy_q5.py
@@ -1,6 +1,19 @@
-# Grading System: Write a program that takes a student’s marks as input and prints the grade (A, B, C, or F) based on given thresholds.
-
 def grade_system(marks):
+<<<<<<< HEAD
+    if marks >=90 and marks <=100:
+        return "A"  
+    elif marks >= 80 and marks <=90:
+        return "B"   
+    elif marks >= 70 and marks <=80:
+        return "C"   
+    else:
+        return "D"  
+    
+if __name__ == "__main__":
+    num = int(input("Enter the Mark : "))
+    res = grade_system(num)
+    print(res)
+=======
     if marks >= 90:
         return "A"  
     elif marks >= 80:
@@ -18,3 +31,4 @@ def grade_system(marks):
       num = int(input("Enter the Mark : "))
       res = grade_system(num)
       print(res)
+>>>>>>> c39895b92dbcd0dd59250c4268a660b41d857e3d
diff --git a/problems/medium/m1.py b/problems/medium/m1.py
index 5a986f4..64ce7f8 100644
--- a/problems/medium/m1.py
+++ b/problems/medium/m1.py
@@ -1,11 +1,36 @@
-'''
-Create a menu to perform basic mathematical operations (addition, subtraction, multiplication, division, modulo) on two numbers.
-
-'''
 def math_operations_menu(choice):
-    a, b = map(int, input("Enter two numbers(separated by commas): ").split(sep=","))
+    try:
+        a, b = map(int, input("Enter two numbers (separated by a comma): ").split(sep=","))
+        
+        # Perform the operation based on user's choice
+        if choice == 1:
+            print(f"Addition of {a} and {b}: {a + b}")   
+        elif choice == 2:
+            print(f"Subtraction of {a} and {b}: {a - b}")   
+        elif choice == 3:
+            print(f"Multiplication of {a} and {b}: {a * b}")   
+        elif choice == 4:
+            if b == 0:
+                print("Error! Division by zero is not allowed.")
+            else:
+                print(f"Division of {a} and {b}: {a / b}")   
+        elif choice == 5:
+            if b == 0:
+                print("Error! Modulo by zero is not allowed.")
+            else:
+                print(f"Modulus of {a} and {b}: {a % b}")   
+        elif choice == 6:
+            print(f"{a} to the power of {b}: {a ** b}")
+        else:
+            print("Invalid option!!!")
+    except ValueError:
+        print("Invalid input! Please enter two valid numbers separated by a comma.")
 
  
+# Menu for mathematical operations
+print("-------------Mathematical Operation Menu---------------")
+ 
+ 
     a=int(input("Enter first numbers: "))
     b=int(input("Enter second numbers: "))
 
@@ -52,14 +77,28 @@ def math_operations_menu(choice):
  
         print("Invalid option!!!")
 print("-------------Mathematical operation menu---------------")
+ 
 print("1. Add")
 print("2. Subtract")
 print("3. Multiply")
 print("4. Divide")
 print("5. Modulus")
+ 
+print("6. Exponential")
+
+# Get user's choice for operation
+try:
+    choice = int(input("Enter your choice: "))
+    math_operations_menu(choice)
+except ValueError:
+    print("Invalid choice! Please enter a number between 1 and 6.")
+
+print("-------------------------------------------------------")
+ 
 print("6. Expontential")
 choice = int(input("Enter your choice: "))
 math_operations_menu(choice)
 print("-------------------------------------------------------")
  
- 
\ No newline at end of file
+ 
+