/in/foo.c:9:1: error: unknown type name 'bool'
 bool st[MAX] = {0};
 ^~~~
/in/foo.c:14:41: error: unknown type name 'bool'
 int dfs(int i,int arr[],int brr[],int N,bool st[])
                                         ^~~~
/in/foo.c: In function 'main':
/in/foo.c:59:11: warning: implicit declaration of function 'dfs' [-Wimplicit-function-declaration]
         m=dfs(i,arr,brr,N,st);
           ^~~