Accepted
/in/foo.cc: In function 'void dfs2(int, int)':
/in/foo.cc:42:6: warning: unused variable 'i' [-Wunused-variable]
int i, j, k, v;
^
/in/foo.cc: In function 'void dfs2(int, int)':
/in/foo.cc:42:6: warning: unused variable 'i' [-Wunused-variable]
int i, j, k, v;
^
