def find_largest_contig(contig_lengths_dict):
<EOL>longest_contig_dict = dict()<EOL>for file_name, contig_lengths in contig_lengths_dict.items():<EOL><INDENT>longest_contig_dict[file_name] = contig_lengths[<NUM_LIT:0>]<EOL><DEDENT>return longest_contig_dict<EOL>
Determine the largest contig for each strain
:param contig_lengths_dict: dictionary of strain name: reverse-sorted list of all contig lengths
:return: longest_contig_dict: dictionary of strain name: longest contig