style: format markdown files with remark-lint

??? note "参考代码"

    ```cpp

    #include<cstdio>

    #include <algorithm>

    #include <cstdio>

    using namespace std;

    struct edge

    {

    struct edge {

      int v, next;

    } e[305];

    int head[305], f[305][305], cnt, s[305];

    void addedge(int u,int v)

    {

    void addedge(int u, int v) {

      e[++cnt].v = v;

      e[cnt].next = head[u];

      head[u] = cnt;

    }

    int dfs(int a)

    {

    int dfs(int a) {

      int p = 1;

      f[a][1] = s[a];

     for(int t=head[a];t;t=e[t].next)

     {

      for (int t = head[a]; t; t = e[t].next) {

        int v = e[t].v;

        int now = dfs(v);

        //需要注意枚举的上下界

      }

      return p;

    }

    int main()

    {

    int main() {

      int n, m;

      scanf("%d%d", &n, &m);

     for(int i=1;i<=n;i++)

     {

      for (int i = 1; i& lt; = n; i++) {

        int u;

        scanf("%d%d", &u, &s[i]);

        addedge(u, i);