11 Use of conversion functions

Enter an integer and base, convert to decimal output

Input format:
Enter integer and base on one line

Output format:
output the result in one line in decimal

Sample input:
A set of inputs is given here. E.g:

45,8

Sample output:
The corresponding output is given here. E.g:

37

a,b=input().split(",",1)
b=eval(b)
c=int(a,b)
print(c)

Write conversion function yourself

a,b = input().split(",",1)
a=str(a)
b=int(b)
count=len(a)
i=0
sum=0
while count !=0 :
    sum += int(a[i])*(b**(count-1))
    count -= 1
    i += 1

print(sum)