View Compilation Error

0_0_37821208_31051.cpp: In function 'int diji(int)':
0_0_37821208_31051.cpp:42:20: error: no match for 'operator[]' (operand types are 'int [305]' and '__gnu_cxx::__alloc_traits<std::allocator<node> >::value_type {aka node}')
             if(!vis[g[u][i]]&&dis[now.v]>dis[u]+now.w){
                    ^