View Compilation Error

0_0_18606907_29743.cpp:27:15: error: 'll' was not declared in this scope
 unordered_map<ll, int> lastIdx;
               ^
0_0_18606907_29743.cpp:27:22: error: template argument 1 is invalid
 unordered_map<ll, int> lastIdx;
                      ^
0_0_18606907_29743.cpp:27:22: error: template argument 3 is invalid
0_0_18606907_29743.cpp:27:22: error: template argument 4 is invalid
0_0_18606907_29743.cpp:27:22: error: template argument 5 is invalid
0_0_18606907_29743.cpp:27:31: error: invalid type in declaration before ';' token
 unordered_map<ll, int> lastIdx;
                               ^