View Compilation Error

0_0_37728714_18138.cpp: In function 'int main()':
0_0_37728714_18138.cpp:100:15: error: expected unqualified-id before '[' token
     for (auto [c, d] : C[v]) {
               ^
0_0_37728714_18138.cpp:100:15: error: expected ';' before '[' token
0_0_37728714_18138.cpp:100:16: error: 'c' was not declared in this scope
     for (auto [c, d] : C[v]) {
                ^
0_0_37728714_18138.cpp:100:19: error: 'd' was not declared in this scope
     for (auto [c, d] : C[v]) {
                   ^
0_0_37728714_18138.cpp: In lambda function:
0_0_37728714_18138.cpp:100:22: error: expected '{' before ':' token
     for (auto [c, d] : C[v]) {
                      ^
0_0_37728714_18138.cpp: In function 'int main()':
0_0_37728714_18138.cpp:100:22: error: expected ';' before ':' token
0_0_37728714_18138.cpp:100:22: error: expected primary-expression before ':' token
0_0_37728714_18138.cpp:100:22: error: expected ')' before ':' token
0_0_37728714_18138.cpp:100:22: error: expected primary-expression before ':' token