View Compilation Error

0_0_24248557_5409.cpp: In member function 'void Seg::upd(int, int, ll, int, int, int)':
0_0_24248557_5409.cpp:103:34: error: 'update' was not declared in this scope
         if(L<=m)update(L,R,v,lson);
                                  ^
0_0_24248557_5409.cpp:104:33: error: 'update' was not declared in this scope
         if(R>m)update(L,R,v,rson);
                                 ^