View Compilation Error

0_0_38468175_5008.cpp: In function 'int query(int, int)':
0_0_38468175_5008.cpp:87:50: error: 'getsum' was not declared in this scope
             res += getsum(cur, cur + (1 << i) - 1);
                                                  ^
0_0_38468175_5008.cpp:93:23: error: 'getsum' was not declared in this scope
     res += getsum(u, u);
                       ^