Good Bye 2025

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2178 Good Bye 2025 FINISHED False 10800 9559523 Dec. 27, 2025, 2:35 p.m.

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( 25498 ) A Yes or Yes PROGRAMMING brute force greedy strings

Last Christmas, your friend Fernando gifted you a string (s) consisting only of the characters (\mathtt{Y}) and (\mathtt{N}), representing "Yes" and "No", respectively. You can repeatedly apply the following operation on (s): Choose any two adjacent characters and replace them with their logical OR . Formally, in each operation, you can choose an index (i) ((1 \leq i \leq |s|-1)), remove the characters (s_i) and (s_{i+1}), then insert: A single (\mathtt{Y}) if at least one of (s_i) or (s_{i+1}) is (\mathtt{Y}); A single (\mathtt{N}) if both (s_i) and (s_{i+1}) are (\mathtt{N}). Note that after each operation, the length of (s) decreases by (1). Unfortunately, Fernando does not want you to combine "Yes OR Yes", as he has experienced trauma relating to a certain song. Determine whether it is possible to reduce (s) to a single character by repeatedly applying the operation above, without ever combining two (\mathtt{Y})'s. Each test contains multiple test cases. The first line contains the number of test cases (t) ((1 \le t \le 500)). The description of the test cases follows. The only line of each test case contains the string (s) ((2\le |s|\le 100)). It is guaranteed that (s_i = \mathtt{Y}) or (\mathtt{N}). For each test case, print " YES " if the string can be reduced to a single character by repeatedly applying the described operation, and " NO " otherwise. You can output the answer in any case (upper or lower). For example, the strings " yEs ", " yes ", " Yes ", and " YES " will be recognized as positive responses. In the first test case, you cannot combine (s_1) and (s_2) since they are both (\mathtt{Y}). Thus, the answer is NO . In the third test case, the following is a valid sequence of operations: (\mathtt{\underline{NN}Y}\to\mathtt{\underline{NY}}\to\mathtt{Y}). Thus, the answer is YES . In the fourth test case, there are two possi

Tutorials

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
355439795 ya_hossein A Dec. 28, 2025, 4:38 a.m. OK C# 13 TESTS 4 62 0
355444119 rajm89 A Dec. 28, 2025, 5:41 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
355443519 Porsche_2030 A Dec. 28, 2025, 5:34 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
355442727 nemesis_xo A Dec. 28, 2025, 5:23 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
355442661 captainkhan A Dec. 28, 2025, 5:22 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
355442325 govpoli A Dec. 28, 2025, 5:18 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
355441632 Eagle_11 A Dec. 28, 2025, 5:07 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
355441384 ah14 A Dec. 28, 2025, 5:04 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
355439988 hackerrank.akash A Dec. 28, 2025, 4:41 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
355439377 tinhoctinhoc A Dec. 28, 2025, 4:31 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
355438851 Om-kathiriya A Dec. 28, 2025, 4:22 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
355446449 wangruiting A Dec. 28, 2025, 6:07 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
355446434 Ishan_Lodh01 A Dec. 28, 2025, 6:07 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
355445619 Madhur_20 A Dec. 28, 2025, 5:58 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
355444052 Arb_103 A Dec. 28, 2025, 5:40 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
355440699 rehanmehta A Dec. 28, 2025, 4:53 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
355440499 jay_jani_0011 A Dec. 28, 2025, 4:50 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
355439407 aritro_pal A Dec. 28, 2025, 4:31 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
355439316 U.A.K A Dec. 28, 2025, 4:30 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
355439160 008-IsmailA-2029 A Dec. 28, 2025, 4:27 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
355438700 usedchang A Dec. 28, 2025, 4:19 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0

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