23401

# 1
num1, num2 = input().split(',')
num1, num2 = num1, num2
try:
    print(int(num1) / int(num2))
except ZeroDivisionError:
    print("You cannot divide by zero")
except ValueError:
    print("You cannot divide by symbol")

# 2
numbers = [int(x) if x.isnumeric() else str(x) for x in input().split()]
try:
    print(sum(numbers))
except TypeError:
    print("You can not add symbol")

# 3
numbers = [int(x) for x in input().split(',')]
target = input()
try:
    print(numbers[int(target)])
except IndexError:
    print('Index out of range')
except ValueError:
    print('Invalid index')

# 4
from numpy import sqrt
number = input()
try:
    if int(number) >= 0:
        print(sqrt(int(number)))
    else:
        print("Cannot calculate square root of negative number")
except ValueError:
    print("Invalid input")

# 5
num1, num2 = input().split(',')
try:
    print(int(num1) % int(num2))
except ZeroDivisionError:
    print("You can not divide by ZERO")
except ValueError:
    print("Invalid input")

# 6
number = input()
try:
    print(int(number))
except ValueError:
    print("Conversion Error")

# 7
num1, num2 = input().split(',')
try:
    print(int(num1) - int(num2))
except ValueError:
    print("Invalid input")

# 8
n = int(input())
my_dict = {}
for i in range(2):
    key, value = input().split(',')
    my_dict[key] = int(value)
target = input()
try:
    print(my_dict[target])
except KeyError:
    print("Key not found")

# 9
num1, num2 = input().split(',')
try:
    print(int(num1) + int(num2))
except ValueError:
    print("Invalid input")