from periodic import elements as table

def combine_ionic(element1, element2):
    if abs(table[element2]['charge']) != 1 and abs(table[element2]['charge']) != abs(table[element1]['charge']):
        if type(table[element2]['charge']) != type(tuple()):
            ion1 = element1+str(abs(table[element2]['charge']))
        else:
            element1+str(abs(table[element2]['charge'][0]))
    else:
        ion1 = element1
    if abs(table[element1]['charge']) != 1 and abs(table[element2]['charge']) != abs(table[element1]['charge']):
        if type(table[element1]['charge']) != type(tuple()):
            ion2 = element1+str(abs(table[element1]['charge']))
        else:
            element1+str(abs(table[element1]['charge'][0]))
    else:
        ion2 = element2
    return ion1+ion2

ele1 = input('Enter an element: ')
ele2 = input('Enter a second element: ')


if table[ele1]['type'] != table[ele2]['type']:
    compound = combine_ionic(ele1, ele2)
    print(compound)