2024.1.27 14:50 cnblogs 博客文章测试

#include <cstring>
#include <cstdio>

using namespace std;

int main () {
	printf("Hello world.\n");
	
	return 0;
}

\(a+b=c\)
\((f*g)(x) = \sum_{d = 1}^{n} f(d)* g(\lfloor\frac{n}{d}\rfloor)\)

\[\begin{align*} dp_{1} = V \\ dp_{i} = \min_{j < i}{dp_j + \frac{x_i - x_j}{2\sqrt r_j}} + v_i \tag{i > 1} \end{align*} \]