View Compilation Error

0_0_30724069_29546.cpp: In function 'void dfs(int)':
0_0_30724069_29546.cpp:6:21: error: request for member 'size' in 'G[u]', which is of non-class type 'int [1005]'
  for(int i=0;i<G[u].size();i++){
                     ^