View Compilation Error

0_0_37198365_19190.cpp: In function 'void ins(int, int, ll)':
0_0_37198365_19190.cpp:21:15: error: expected unqualified-id before '[' token
         auto& [x, y] = *j++;
               ^
0_0_37198365_19190.cpp:21:15: error: expected initializer before '[' token
0_0_37198365_19190.cpp:22:20: error: 'y' was not declared in this scope
         ll t = min(y, b);
                    ^