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1194 Three strings data structures dsu string suffix structures strings Statement E MemSQL Start[c]UP 2.0 - Round 1 {452} PROGRAMMING MemSQL Start[c]UP 2.0 Round 1 and 2 Editorials 2400
3459 Correct Bracket Sequence Editor data structures dsu strings Statement E Codeforces Round 350 (Div. 2) {670} PROGRAMMING Codeforces Round #350 (Div.2) Editorial 1700
1849 Forbidden Indices dsu string suffix structures strings Statement F Educational Codeforces Round 30 {873} PROGRAMMING 55171 2300