Which of the two sequences is lexicographically smaller ?

A = { 11 ,11,17,61 }

B = { 3 , 3, 5,89 }

Source : Problem 10419 — Sum-up the Primes ( UVa Online Judge )

For 2 Sample which is correct A or B.
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Hi , Can anyone give me list of problems on Codeforces requiring knowledge of Suffix Array and its Variants to solve . If could list them in increasing order of difficulty it would be great. Thanks for your help.