View Compilation Error

0_0_37818263_14695.cpp: In function 'void solve()':
0_0_37818263_14695.cpp:72:14: error: expected unqualified-id before '[' token
         auto [x, y] = e[i];
              ^
0_0_37818263_14695.cpp:73:24: error: 'x' was not declared in this scope
         if (!dsu.merge(x, y))
                        ^
0_0_37818263_14695.cpp:73:27: error: 'y' was not declared in this scope
         if (!dsu.merge(x, y))
                           ^