View Compilation Error

0_0_37777964_15866.cpp: In function 'void solve()':
0_0_37777964_15866.cpp:43:12: error: expected unqualified-id before '[' token
   for(auto [v,mask]:e[u]){
            ^
0_0_37777964_15866.cpp:43:12: error: expected ';' before '[' token
0_0_37777964_15866.cpp:43:13: error: 'v' was not declared in this scope
   for(auto [v,mask]:e[u]){
             ^
0_0_37777964_15866.cpp:43:15: error: 'mask' was not declared in this scope
   for(auto [v,mask]:e[u]){
               ^
0_0_37777964_15866.cpp: In lambda function:
0_0_37777964_15866.cpp:43:20: error: expected '{' before ':' token
   for(auto [v,mask]:e[u]){
                    ^
0_0_37777964_15866.cpp: In function 'void solve()':
0_0_37777964_15866.cpp:43:20: error: expected ';' before ':' token
0_0_37777964_15866.cpp:43:20: error: expected primary-expression before ':' token
0_0_37777964_15866.cpp:43:20: error: expected ')' before ':' token
0_0_37777964_15866.cpp:43:20: error: expected primary-expression before ':' token