View Compilation Error

0_0_38070579_7251.cpp: In function 'void dfs(int, int)':
0_0_38070579_7251.cpp:14:12: error: expected unqualified-id before '[' token
  for(auto& [v, w] : g[u]){
            ^
0_0_38070579_7251.cpp:14:12: error: expected ';' before '[' token
0_0_38070579_7251.cpp:14:13: error: 'v' was not declared in this scope
  for(auto& [v, w] : g[u]){
             ^
0_0_38070579_7251.cpp:14:16: error: 'w' was not declared in this scope
  for(auto& [v, w] : g[u]){
                ^
0_0_38070579_7251.cpp: In lambda function:
0_0_38070579_7251.cpp:14:19: error: expected '{' before ':' token
  for(auto& [v, w] : g[u]){
                   ^
0_0_38070579_7251.cpp: In function 'void dfs(int, int)':
0_0_38070579_7251.cpp:14:19: error: expected ';' before ':' token
0_0_38070579_7251.cpp:14:19: error: expected primary-expression before ':' token
0_0_38070579_7251.cpp:14:19: error: expected ')' before ':' token
0_0_38070579_7251.cpp:14:19: error: expected primary-expression before ':' token