【Codeforces 659F】Polycarp and Hay

【Codeforces 659G】Fence Divercity

【BZOJ2555】SubString

【SPOJ7258】Lexicographical Substring Search

【SPOJ1812】Longest Common Substring II

【SPOJ1811】Longest Common Substring

【SPOJ8222】Substrings

【Codeforces 653E】Bear and Forgotten Tree 2

【Codeforces 653D】Delivery Bears

【Codeforces 652E】Pursuit For Artifacts