View Compilation Error

0_0_37903946_12050.cpp: In function 'void solve()':
0_0_37903946_12050.cpp:107:8: error: expected unqualified-id before '[' token
   auto [b, e, l] = g[i];
        ^
0_0_37903946_12050.cpp:108:31: error: 'l' was not declared in this scope
   ST.modify(1, 1, cnt, id[i], l, 1ll * l * pre[i]);
                               ^
0_0_37903946_12050.cpp:115:9: error: expected unqualified-id before '[' token
   auto &[b, e, l] = g[x];
         ^
0_0_37903946_12050.cpp:115:9: error: expected initializer before '[' token
0_0_37903946_12050.cpp:116:35: error: 'l' was not declared in this scope
   ST.modify(1, 1, cnt, id[x], y - l, (y - l) * pre[x]);
                                   ^