A13745 | Substring Removal Game
时间限制1s
内存限制256MB
通过 / 提交0/0
题目描述
Alice and Bob play a game. They have a binary string $s$ (a string such that each character in it is either $0$ or $1$ ). Alice moves first, then Bob, then Alice again, and so on.
During their move, the player can choose any number (not less than one) of consecutive equal characters in $s$ and delete them.
For example, if the string is $10110$ , there are $6$ possible moves (deleted characters are bold):
1. $\textbf{1}0110 \to 0110$ ;
2. $1\textbf{0}110 \to 1110$ ;
3. $10\textbf{1}10 \to 1010$ ;
4. $101\textbf{1}0 \to 1010$ ;
5. $10\textbf{11}0 \to 100$ ;
6. $1011\textbf{0} \to 1011$ .
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: $10\textbf{11}0 \to 1\textbf{00} \to 1$ .
The game ends when the string becomes empty, and the score of each player is the number of $1$ -characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
During their move, the player can choose any number (not less than one) of consecutive equal characters in $s$ and delete them.
For example, if the string is $10110$ , there are $6$ possible moves (deleted characters are bold):
1. $\textbf{1}0110 \to 0110$ ;
2. $1\textbf{0}110 \to 1110$ ;
3. $10\textbf{1}10 \to 1010$ ;
4. $101\textbf{1}0 \to 1010$ ;
5. $10\textbf{11}0 \to 100$ ;
6. $1011\textbf{0} \to 1011$ .
After the characters are removed, the characters to the left and to the right of the removed block become adjacent. I. e. the following sequence of moves is valid: $10\textbf{11}0 \to 1\textbf{00} \to 1$ .
The game ends when the string becomes empty, and the score of each player is the number of $1$ -characters deleted by them.
Each player wants to maximize their score. Calculate the resulting score of Alice.
输入格式
The first line contains one integer $T$ ( $1 \le T \le 500$ ) — the number of test cases.
Each test case contains exactly one line containing a binary string $s$ ( $1 \le |s| \le 100$ ).
Each test case contains exactly one line containing a binary string $s$ ( $1 \le |s| \le 100$ ).
输出格式
For each test case, print one integer — the resulting score of Alice (the number of $1$ -characters deleted by her).
输入输出样例
输入 #1
5 01111001 0000 111111 101010101 011011110111
输出 #1
4 0 6 3 6
Questions about the optimal strategy will be ignored.
C++ 编辑器
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评测结果:Accepted