View Compilation Error

0_0_21015808_683.cpp: In function 'void DFS(int, int, int)':
0_0_21015808_683.cpp:4:12: error: expected primary-expression before 'long'
 #define ll long long
            ^
0_0_21015808_683.cpp:19:38: note: in expansion of macro 'll'
     ll cur = max(rest - sum[idx - 1],ll(0));
                                      ^