Programmer Think

1. Concept Vuex is designed for Vue JS application development state management mode. It uses centralized storage to manage the status (data) of all components of the application. Vuex is also integrated into Vue's official debugging tool devtools. In short, Vuex is a Vue plug-in that implements centralized state (data) management in Vue. ...

J1001 gcd Problem solution KaTeX parse error: Expected 'EOF', got '&' at position 253: ...d(k, t) = 1] &̲ \text{if }t = ... $\ phi (n) = n * \ prod (1 - \ frac {1} {p_i}) = n * \ prod {\ frac {p_i - 1} {p_i} & [\ text {if} n = \ prod {p_i ^ {a_i}}, p_i \ text {is the quality factor}] \ $ Time complexity: ...

Catalogue of Series Articles I. Array Type Solution Method I: Dichotomy 2. Array Type Solution Method 2: Double Pointer Method 3. Array Type Solution Method 3: Sliding Window IV. Array Type Solution Method 4: Simulation V. Basic Operation and Classical Title of Chain List in Chain Table Text 6. Classic Title of Hash Table 7. Classic Title ...

A.R thinking Suppose there is a string containing k k k r strings [L,R], the left and right first P is L,R, then the contribution of this paragraph is ( l − L ...

Essence of digital dp: A fast enumeration method, which satisfies the nature of dp, and then carries out memory search. Example: Niuke - Digital children Title Description: Jiufeng has been addicted to digital dp recently. On this day, he created another digital dp problem: Give an interval [l,r][l,r][l,r], find out how many numbers in this ...

Title Link: Binary apple tree - Luogu Analysis: This is a tree DP topic. It's not too difficult, but it's easy to grasp the details. Let's explain this topic directly below: Let f[i][j] represent the maximum number of apples that can be retained by retaining j branches in the subtree with I as the root. After knowing the state representatio ...

subject Topic background Write for two consecutive days LCT + ddp \texttt{LCT}+\texttt{ddp} LCT+ddp, I still feel it when I look at it today d d ...

Number of good subsets   the data range of this question is relatively small, which determines that state compression dp can be used.    to split the product of all numbers in the subset into different prime factors, the subset must hold different prime factors, and each element subset cannot hold duplicate prime factors. &emsp ...

2022-02-22 swipe questions and punch in every day All in one -- dynamic programming 1268: [example 9.12] complete knapsack problem [Title Description] There are n kinds of articles, each of which has a weight and a value. However, the number of each item is unlimited. At the same time, there is a backpack with a maximum carrying capacity of ...

preface For the original knapsack problem and its optimization, please refer to this blog knapsack problem Initialization of knapsack problem There are three general problems Corresponding initialization method For volume up to j, f [ 0 ...