View Compilation Error

0_0_16903240_10932.cpp: In function 'void dfs2(int, int)':
0_0_16903240_10932.cpp:55:25: error: '__gnu_cxx::__alloc_traits<std::allocator<node> >::value_type' has no member named 'v'
         int v = q[u][i].v;  
                         ^