View Compilation Error

0_0_37899048_9357.cpp: In function 'void dfs(int, int)':
0_0_37899048_9357.cpp:30:14: error: expected unqualified-id before '[' token
     for(auto [v, we] : g[u]) {
              ^
0_0_37899048_9357.cpp:30:14: error: expected ';' before '[' token
0_0_37899048_9357.cpp:30:15: error: 'v' was not declared in this scope
     for(auto [v, we] : g[u]) {
               ^
0_0_37899048_9357.cpp:30:18: error: 'we' was not declared in this scope
     for(auto [v, we] : g[u]) {
                  ^
0_0_37899048_9357.cpp: In lambda function:
0_0_37899048_9357.cpp:30:22: error: expected '{' before ':' token
     for(auto [v, we] : g[u]) {
                      ^
0_0_37899048_9357.cpp: In function 'void dfs(int, int)':
0_0_37899048_9357.cpp:30:22: error: expected ';' before ':' token
0_0_37899048_9357.cpp:30:22: error: expected primary-expression before ':' token
0_0_37899048_9357.cpp:30:22: error: expected ')' before ':' token
0_0_37899048_9357.cpp:30:22: error: expected primary-expression before ':' token