View Compilation Error

0_0_17703839_7028.cpp: In function 'int Query(int, int, int, int)':
0_0_17703839_7028.cpp:33:12: error: 'd' was not declared in this scope
         L+=d[s],R+=d[t];
            ^
0_0_17703839_7028.cpp:37:36: error: 'd' was not declared in this scope
     int res=max(L,R);while(s) res+=d[s>>=1];
                                    ^