
    s = 'TATAAGGGAAACGCGACCGTTGCGAGCTCATACGCCCAGGTGCGTATGAGAGCTAGTTAAATCGATCCGAGAGTTTTCGCATTACTTGCAGGTCAGCTTATATGCCTAGACAGGACAGTACGTATTGAAAGCGTGGGAGTCGTCGCGTTTTCCATAAAGGCGTAAGCGATGCGGTGATAGGGCCCCCAGGTCATGAATGTACCACACGAATAAGGTCCGAAGCTGCGCTGGTATACCGCAGCGGACTTGGACCAGGAGTAGCCGCTTATGGTTCAAGGCCACGTTATCGCGAGTGAACTCTAGCGCGACTTGTTCTGGTATCAGGTCTAAGACTACTCTAGACGTAGGCGCCACTATTATTTAAACAAATATCTTACAAGCCTGCCACTTCTTATACAGCTTCCCTTTTGGACTGAACCCTATATGTTATTTCTTGAAGCGGCAGCTGGCGCTAAGATAGACTTGTCATCTGGAACGCACGTAGATTTTAGTCTGGTAACGTTAGGAAGCCCAGGACAAGCGTCTCAATTTACTTATCACGCTCGTGCCAGCCAGGTACTAATTCTCCGACCCGCAGCCCTAGATATTAGTAGTTCTATAGATTCCACTCAGCTATCAAGAATAAGGTTCGGGCATGGGCACGGGAGCCAAACAGCGTCTAGGTAATTAGACAACTAAGCTCTTGGCGCGGCCCGAGTCATGTTTCGGTGGTCTGTGTTTGGGCATCGCGGGATCCCTAATCTTGCTCTATCGTGAAACGAAGGAGCGGCTTAATATAAAACGGTAGGGGGCGTTGTCACTTTCAGTGACGGCTCAGCCTCCTCCTCATGGCGGTCCATTTACATAAGGTCACACCGATGGCAAGTCGGTAACTACGTATAAGCCTCATGATTGAAATTGCACGTGGACCCCAGCATGACGTTTGAGCAACTCACTAAATGAAATAGCTTGCGTTTCCCAGCTACCGGCTGTGAAACGACGGGTGCTACCCATA'
    t = 'TGGACAGTCATCGCGTACTATGCGAGCCGTTTCGACCGAATAATCCAGGAAGGAAGTAAACTCGAGGGGGCAGAGTATGGATACCTAGCACTGCGAGGTGTATCAATAGCAAGGATAAAACCTAGGGGCAGCGCTGGCTTAGTTGTGTTTGATTAAGCGGCCTAAACCTAGCTGTGACGGAGCCCTCATCCACAGATATGAACTCACGGCAAAGGTTCGAACCTCCGCTAGGATGCCTCATGGCAGGGTGAATAGTCACAGTCGCCGGTGATTCAACCCGACTATAACGGGACAACTCTATAGCGTTTCTGGTTTGGTATTCGTGTAGATAAGGGCACGATATGTACAGCCGTCGTCTTAATAGAGGATGTCTGTAAGGCTGTACCAGTCCTTTTGTAAGTTACCTTTAAGGCTGACGCCTCTACCCGGTCTTCATTTCATGGCCGGGTTGCTCGGATACAGTCGCCATCGAGTCGTCACCTTGTTTCTTCTGTATGCCCCTTGGGTATCGCAGGACAAGCTTCCCATTTTAACTTTCGTACTAGTGAATGCCTGTTACCACTTGTAGGGCACCAAAACCTATCGTCCAGTAGTTCTAGGGCTAGGGGACGACTATCAAACATGTTGTTCGGATCATCGGGGTGAACCATACACAAATGTAGGTGATGAGCAAACTATGCGGCCGGTACTGCACTAGGCGATACTGAAAACGCCGTTTTCGGTCAACGAACGTTTCATAATGTTTCTCTAGGGAGCAGCAAGCCAAGGGTATAAAACGCTAAGTTACATCGCGTCGTACGTTTTCGAAAAAGCTCATCCTCTCTCGCGTAACGGTGATAGCATACTACGCCTCACCGGCGGATAGTGGGAAATCACAGCTAATCCCTATGCTTCCTTTAACACTTGCATACGGCAATTACTTCTGCAACACTTCCTGATTGATATAGGGTCAGGCCTCATGGGACTGACCGTCATACAACCCCATTACCGTAAA'


    # s and t are given as input DNA strings
    # Write your code here


    ans = '490'
    Ex().has_output(ans)
    success_msg("Great job!")