2020-2021 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules) K. The Robot
Moving Coins
XOR Equal
Vaccine Drive
Easy Subsequence Selection
Bon Appetit
345. Reverse Vowels of a String
Given a string s, reverse only all the vowels in the string and return it. The vowels are ‘a’, ‘e’, ‘i’, ‘o’, and ‘u’, and they can appear in both lower and upper cases, more than once.
Given a string s, reverse only all the vowels in the string and return it.
The vowels are ‘a’, ‘e’, ‘i’, ‘o’, and ‘u’, and they can appear in both lower and upper cases, more than once.
Educational Codeforces Round 101 (Rated for Div. 2) C. Building a Fence
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