def organizingContainers(container):
    # Write your code here
    colsum=[0]*len(container)
    rowsum=[0]*len(container)
    for i in range(len(container)):
        rowsum[i]=sum(container[i])
        for r in range(len(container)):
            colsum[r]+=container[i][r]
    if sorted(colsum) == sorted(rowsum):
        return 'Possible'
    else :
        return 'Impossible'    
        fptr.write(result + '\n')

    fptr.close()