View Compilation Error

0_0_33584415_12005.cpp: In member function 'void segment_tree::build(int, int, int)':
0_0_33584415_12005.cpp:26:35: error: 'struct node' has no member named 'lis'
   tree[p].l=l,tree[p].r=r,tree[p].lis=emp;
                                   ^