滴水恩情 发表于 2022-8-9 14:47:03

[AcWing 1052] 设计密码

https://img2022.cnblogs.com/blog/2674359/202206/2674359-20220624224439846-665412683.png
https://img2022.cnblogs.com/blog/2674359/202206/2674359-20220624224452948-278636365.png
KMP + 状态机

点击查看代码#include#include#include#includeusing namespace std;const int N = 60;const int mod = 1e9 + 7;int n;char str;int ne;int f;int main(){    cin >> n >> str + 1;    int m = strlen(str + 1);    for (int i = 2, j = 0; i
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