View Compilation Error

0_0_33499869_20629.cpp:2:1: error: 'VI' does not name a type
 VI adj[NN];
 ^
0_0_33499869_20629.cpp: In function 'void dfs(int, int)':
0_0_33499869_20629.cpp:5:26: error: expected '}' at end of input
 void dfs(int u, int fa=0){
                          ^