View Compilation Error

0_0_38070587_17551.cpp: In function 'void dfs(int, int)':
0_0_38070587_17551.cpp:14:11: error: expected unqualified-id before '[' token
  for(auto [v, w] : g[u]){
           ^
0_0_38070587_17551.cpp:14:11: error: expected ';' before '[' token
0_0_38070587_17551.cpp:14:12: error: 'v' was not declared in this scope
  for(auto [v, w] : g[u]){
            ^
0_0_38070587_17551.cpp:14:15: error: 'w' was not declared in this scope
  for(auto [v, w] : g[u]){
               ^
0_0_38070587_17551.cpp: In lambda function:
0_0_38070587_17551.cpp:14:18: error: expected '{' before ':' token
  for(auto [v, w] : g[u]){
                  ^
0_0_38070587_17551.cpp: In function 'void dfs(int, int)':
0_0_38070587_17551.cpp:14:18: error: expected ';' before ':' token
0_0_38070587_17551.cpp:14:18: error: expected primary-expression before ':' token
0_0_38070587_17551.cpp:14:18: error: expected ')' before ':' token
0_0_38070587_17551.cpp:14:18: error: expected primary-expression before ':' token