View Compilation Error

0_0_37837429_122.cpp: In function 'void work(long long int, long long int, long long int, long long int)':
0_0_37837429_122.cpp:49:19: error: expected unqualified-id before '[' token
         for (auto [to, w] : g[now])
                   ^
0_0_37837429_122.cpp:49:19: error: expected ';' before '[' token
0_0_37837429_122.cpp:49:20: error: 'to' was not declared in this scope
         for (auto [to, w] : g[now])
                    ^
0_0_37837429_122.cpp: In lambda function:
0_0_37837429_122.cpp:49:27: error: expected '{' before ':' token
         for (auto [to, w] : g[now])
                           ^
0_0_37837429_122.cpp: In function 'void work(long long int, long long int, long long int, long long int)':
0_0_37837429_122.cpp:49:27: error: expected ';' before ':' token
0_0_37837429_122.cpp:49:27: error: expected primary-expression before ':' token
0_0_37837429_122.cpp:49:27: error: expected ')' before ':' token
0_0_37837429_122.cpp:49:27: error: expected primary-expression before ':' token