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洛谷:P2957 [USACO09OCT] Barn Echoes G

题目描述Thecowsenjoymooingatthebarnbecausetheirmoosechoback,althoughsometimesnotcompletely.Bessie,evertheexcellentsecretary,hasbeenrecordingtheexactwordingofthemooasitgoesoutandreturns.Sheiscuriousastojusthowmuchoverlapthereis.Giventwolinesofinput(lettersfromtheseta..z,totallengthintherange1..80),eachof