View Compilation Error

0_0_35822052_29298.cpp: In function 'void dfs(int, int)':
0_0_35822052_29298.cpp:20:13: error: expected unqualified-id before '[' token
     for(auto[to,w]:g[u]){
             ^
0_0_35822052_29298.cpp:20:13: error: expected ';' before '[' token
0_0_35822052_29298.cpp:20:14: error: 'to' was not declared in this scope
     for(auto[to,w]:g[u]){
              ^
0_0_35822052_29298.cpp:20:17: error: 'w' was not declared in this scope
     for(auto[to,w]:g[u]){
                 ^
0_0_35822052_29298.cpp: In lambda function:
0_0_35822052_29298.cpp:20:19: error: expected '{' before ':' token
     for(auto[to,w]:g[u]){
                   ^
0_0_35822052_29298.cpp: In function 'void dfs(int, int)':
0_0_35822052_29298.cpp:20:19: error: expected ';' before ':' token
0_0_35822052_29298.cpp:20:19: error: expected primary-expression before ':' token
0_0_35822052_29298.cpp:20:19: error: expected ')' before ':' token
0_0_35822052_29298.cpp:20:19: error: expected primary-expression before ':' token