View Compilation Error

0_0_37615011_7465.cpp: In function 'int main()':
0_0_37615011_7465.cpp:59:12: error: expected unqualified-id before '[' token
       auto [v,id]=a[i];
            ^
0_0_37615011_7465.cpp:60:11: error: 'id' was not declared in this scope
       vis[id]=1;
           ^
0_0_37615011_7465.cpp:65:17: error: 'y' was not declared in this scope
           if(u==y) {
                 ^