Input
GCGGTTATGCACCGTTCAAATTAGCAAACCACTAAGCGACGTAGTCTGGATTGATTTCTCCCTACCAGTGACCCAAGACGCGTTAGTGAGTTAAGTTCATATCCAGTACCTGCCGCCCTCTGTACTTGGGCGTCCGATTCGCATGCTTACTCAGGTGGAGGACACGATAATCTGATTAAACTGAGCTAAACCAGGTGGAACCAGAAACCAGGTGGGGAGTCTCGCTTCAAGCCGTTCTTGCGATCAAACCAGGTGGTCCATTATGAAACCAGGTGGCTAAACCAGGTGGTCCAGATCCTCGAATGATGTCGGTGCACATCAAAACCAGGTGGGGTGGTGGAACGTAAAACCAGGTGGCATAAACCAGGTGGGCCGGTTCGTAAACCAGGTGAAACCAGGTGGGGTGGAAACCAGGTGGGTTACAAATTACGTTGAGATGGCCCAAACCAGGTGGTGGGCTTCACCCATGTCAACAAACCACCCTATGGAACTAAACCAGGTGGAACCAGGTGGTGAAGGCTTATCCTCAGGAAAAACCAGGTGGAGGTGGTGAAATAAAACCAGGTGGACCAGGTGGATAACCCTCGCCTCGCTTCTCAACCGAGACCTGGATAAACCAGGTGGGGTGGTCCACCGATTTTTGAGACACTAGAAACCAGGTGGGCGGGGAAACCAGGTGGCAAACCAGGTGGGGTGGACGGAAACCAGGTGGATATGTCATAAAACCAAACCAGGTGGTGCACCCCCATGGTGTGTCTTATCCGTGCGTATAAACCAGGTGGTCGCACGGCTTCCACTTGCTGAGAATAGGCCCGCAGGGTCAGTGCCATGCCCTCCGTCACTCGATATGTGTTGTAAGAGTGGTTACCCCTTCATTGAAGTCGCCCACAGCCCCACCTGCATTGCTAGACTATCACCCTACAGTAGGCCTTTTCGCCTTCTTCAAGCAGCAATCTCTTATCCGCGGATGGGCGCGGCGAGCGTGGCGTCCCCGAACATTTTTACCTAACGTGTTTTGTTGGCCGCAAGCCTTCCCTCTAGTCCACCTCAGCCATTCAGCCTAGTAGCTTTCAAGCCGAGCCTTCCATATCTAATGGACCGTCCAGAATTTCACACGTTTCACAGGGCTGTGTTCGACCGCCCGTAATGCTGTTTCACAGGCGATCGCCTTGCGGTTTTTTCACAGATCGCAGCCGATGGACATGCCAACTCGATTTTCACAGAGTTTTTCACAGCGGTTTCACAGCACAGCAGTGATTGTTTCACAGCAATTTTCACTTTCACAGGGGCCCTTTTCACAGCTCAGGGCTCTTTTCACTTTCACAGTTTCACAGCGCTCCTTTCACAGAGCGGGGAAATTTAAGGGAACACTCAAGGGAACAAGGGAACACACAAAGGGAACACAACACAACACATAAGGGAACACTTTCACAGAACACAAAAGTCCGAAATCATCAGCGGCGAAGGGATTTCACAGACAGACACTTTCACAGCGCATTTCACAGATACGTACTTTCACAGGCGTACTTTCACAGACTTTCACAGAGGACAAGCTCAATTTTCACAGACAGGCTGGATAAATTTCACAGCGGTAAGGGTTTCACAGCACACATAAGGGAACACGAATTTCACAGCAGGGAACACCTCTACGAGTAATCTATTACTCTACCTACTGAAGGGAACACACCGAAGACCTACTATTACCTATTACTCTTAAAGGGAACACATTACAAGGGAACACACTCTCTCGTCATATCTCACCTCTCTATTACTCTTAAGGGAACACCTTCTCGATCAACCTATTACTCTATGGAGATAGAGATATTCCAGACATATGGAGATAACATGGAGATATGGAGATAATGGAGATGGAGATAGCTCTTATATTTATCCTATGGAGATATGATACTATTAATGGAGATAATTCTAATGGAGATATAATTACTCTAAGAGGATGGGATCTCGGGCTATTACTCTAATGGAGATAAGCACTATTACTCTAGGAAATGGAGATATGTCAATGGAGATATGTAATGGAGATAGAGGGAGATGGAGTCGCCATTTCATAATCGCCATTTCATAGTTCAGGAATCGCCATTTCCGCCATTTCTAAGATGGAGTCGCCATTTCTACGTATGGAGATAGGATCGCCATTTCATACGACCCGTTGGATATCGCCATTTCCTCGCCATTTCTGGTGACATTTCTCGCCATTTCATTTCTGGAGATAGATGGATCTCGCCATTTCATAGGAATCGCCATTTCCACGTAGGGGGGGCCACAATCCGTAGGTCGGAATTCAGACTCGCCATTTCCCATCGCCATTTCTTCACCTGTATGCCGATCCCTTCGCCATTTCTCATGGAGATAACTCTCTCTCGCCATTTCTCGCCATTTCCATTTCACTCTCATTCGCCATCGCCATTTCCATTCGCCATTTCATCGCCATTTCTTCAGGATAAGATATCGCCATTTCGACTCTCATTCGCATACTGACTCTCATTCTCATCTCGCCATTTCTCATCTGACTCTCATCCTGGGGGAAACTTGCGACTCTCATCACACTTCCGTCGACTCTCATACTGGCGGATAGCATAGGAGCCATTTAAAGACTCTCATTCTCATTCGAGACTCTCATTCAAATCCTACGAGGACTCTCATATAGACTCTCATATCATTACGAGGACTCTCATATACGAGCCATGCATGTGGCGACGACTCTCATCTACGAGCCATGCAAGCAGAATCTACGAGCGACTCTCATTACGAGCCATGTGACCGTACGAGCCATGCATGCATGCCATGCTGACTCTCATCGAGTACGAGCCATGGAAGTTCTTGTTGGTTCGTAGCCCAAGAGCTGAAGTTACGAGCCTACGAGCCATGAAGTTACTTTTACGAGCCATGAAGCTTACGATACGAGCCATGCGAGCCATGCATCCGCGCTACGAGCCATGTTCCAGTACGAGCCATGTTAGTTGCTGAAGTTAAGTTTGGCGCTGAAGTTTGTACGAGCCATGTGCCCGCTGAAGTTTGTTGTACGAGCCATGCATGCTGAAGTTAATGGCTGAAGTTAGCGTTTGCGGGCAGATCCTCATTCTACGATACGAGCCATGCCATGCAGCTGAAGTTAAGTTGGGTTACGAGCCATGCGAGCCATGTGAAGTACGAGCCATGCTGGCTGAAGTTGTTTGTGCTGCTGAAGTTGCTCTTGTCTCTAGCTGAAGTTGCCAACAGGGCTGAAGCTGAAGTTTAAGCTGAAGTTGCGAGCAGGCTGAAGTTATCGGATTGGGGCTGAAGTTCAACCTCCCGTCCCCCCACACTATATTCCCGTCCCCCCCCGCGCACGCGCCGTCTCCCGTCCCCCCTATCCCGTGCGCACGCGACGCGATCCCGTCCCCCCAGAGTGCGCGCACGCGTCCCCCTTCCCGTCCCCCTCTCCCGGGCGCACGCGTCGCTCAACATTTCCGCGCACGCGTCGCGCACGCGGGCGCACGCGGGTCCCGTCCCCCCCCCTCTTCGGCGCACGCGGAATTCCCGTCGCGCACGCGTCCCGTCCCGCGCACGCGTCGCGCACGCGACTGCCCTAACCAACAGTGCGCACGCGCCGGTAACCCGGTAACCCGGTAACCGCGCACGCGGGCGCACGCGCGTAACCCGCGCACGCGCCGCGCACGCGGCCCGGTTCCCGTCCCCCCCGGTAACCCGGTAACTCCCGTCCCCCGTAACCCGGTGCGCACGCGCCCGGCGCACGCGGAGCGCACGCGCCCCCCCCGGTAATAGCGCACGCGCCCGGGCGCACGCGCCCGGTAACCCGGTAACCCGGGCGCGCGCACGCGGCGGCGCACGCGGCGCACGCGGCGCACGCG
11 566 18
Output
AAACCAGGTGG