View Compilation Error

0_0_18460248_23516.cpp: In function 'int dfs2(int, int)':
0_0_18460248_23516.cpp:65:18: error: too few arguments to function 'int dfs2(int, int)'
         if(dfs2(v)>=1) res++;
                  ^
0_0_18460248_23516.cpp:58:5: note: declared here
 int dfs2(int u,int flag)
     ^