Given a string of random numbers, your job is to find the product of the numbers(one is lesser and one is greater) who is already present in the string. 

For instance, a pronic number is a number which is the product of two consecutive integers, that is, a number of the form n(n + 1). Like 6 is the pronic number as 2*3 = 6.

Input : 

First Input : String of random numbers

Output : List of pronic numbers

Sample Testcases :

I/P 1:

123456

O/P 1:

[2,6,12]

I/P 2:

4567

O/P 2:

-1

Solution :

import itertools
list1=[]
s=str(input())
res = [s[i: j] for i in range(len(s)) for j in range(i + 1, len(s) + 1)]
def pronic(s1):
    set1=[]
    set2=[]
    for p in range(0,len(s1)-1):
        a=int(s1[p])
        b=int(s1[p+1])
        mul=int(a*b)
        mul=str(mul)
        if mul in res:
            set1.append(mul)
    if (len(set1)==0):
        print(“-1”)
    else:    
        print(set1)
pronic((s))