[Codeforces] Educational Round 19 C. Minimal string|PSCodeforces|Problem Solving-Greedy-Monotonic Stack

Educational Codeforces Round 19 C. Minimal string

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[AtCoder] F - Greedy Takahashi|PSAtCoder|Problem Solving-Binary Search-Heap-Offline Query Technique

F - Greedy Takahashi

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[AtCoder] F - Common Prefixes|PSAtCoder|Problem Solving-Monotonic Stack-Suffix Array-Longest Common Prefix Array

F - Common Prefixes

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[AtCoder] G - Colorful Candies 2|PSAtCoder|Problem Solving-Combinatorics

G - Colorful Candies 2

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[AtCoder] D - Unique Subsequence|PSAtCoder|Fenwick Tree-Problem Solving-Dynamic Programming

D - Unique Subsequence

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[AtCoder] G - Groups|PSAtCoder|Problem Solving-Dynamic Programming-Combinatorics

G - Groups

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[Codeforces] Round #410 (Div. 2) C. Mike and gcd problem|PSCodeforces|Problem Solving-Euclidean Algorithm-Numeric Theory

Codeforces Round #410 (Div. 2) C. Mike and gcd problem

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[Codeforces] Educational Round 22 C. The Tag Game|PSCodeforces|Problem Solving-Graph Theory-Math-DFS

Educational Codeforces Round 22 C. The Tag Game

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[Codeforces] Round #419 (Div. 1) A. Karen and Game|PSCodeforces|Problem Solving-Greedy

Codeforces Round #419 (Div. 1) A. Karen and Game

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[Codeforces] Educational Round 24 D. Multicolored Cars|PSCodeforces|Problem Solving-Hash Table

Educational Codeforces Round 24 D. Multicolored Cars

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