NeetCode #664LC-651Medium1-D Dynamic ProgrammingNC Algo100
← Back to All Problems#664 · #651 · 4 Keys Keyboard(4 键键盘)
📌 Problem Statement & Constraints
Imagine a keyboard with four keys:
A (print one letter A), Ctrl-A (select all), Ctrl-C (copy the selection), and Ctrl-V (paste the clipboard). You may press keys n times. Return the maximum number of letters A that can be printed. Constraints: 1 <= n <= 50.🔒
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