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f[ i ][ j ]=min( f[ i-1 ][ j ]+1 , f[ i ][ j-1 ]+1 , f[ i-1 ][ j-1 ]+(s1[ i ]!=s2[ j ]) );

Posted by lqp18_31 at 2009-07-30 14:15:27 on Problem 3356 
rt
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