View Compilation Error

0_0_30764987_31251.cpp:13:7: error: 'll' does not name a type
 const ll mod=1e9+7;
       ^
0_0_30764987_31251.cpp: In function 'int main()':
0_0_30764987_31251.cpp:87:28: error: 'mod' was not declared in this scope
                 int hs=(dx*mod+dy)%maxsz;
                            ^
0_0_30764987_31251.cpp:95:28: error: 'mod' was not declared in this scope
                 int hs=(dy*mod-dx)%maxsz;
                            ^
0_0_30764987_31251.cpp:109:28: error: 'mod' was not declared in this scope
                 int hs=(dx*mod+dy)%maxsz;
                            ^
0_0_30764987_31251.cpp:117:29: error: 'mod' was not declared in this scope
                 int hs1=(dy*mod-dx)%maxsz;
                             ^