View Compilation Error

0_0_38435868_29741.cpp: In function 'void solve()':
0_0_38435868_29741.cpp:98:15: error: expected unqualified-id before '[' token
    const auto&[l,r,idx]=qry[j];
               ^
0_0_38435868_29741.cpp:98:15: error: expected initializer before '[' token
0_0_38435868_29741.cpp:99:7: error: 'l' was not declared in this scope
    if(l<i||j>q)break;
       ^
0_0_38435868_29741.cpp:100:8: error: 'idx' was not declared in this scope
    ans[idx]=ft.query(r);
        ^
0_0_38435868_29741.cpp:100:22: error: 'r' was not declared in this scope
    ans[idx]=ft.query(r);
                      ^