View Compilation Error

0_0_33089105_8116.cpp: In function 'void build_tree(int, int, int)':
0_0_33089105_8116.cpp:83:46: error: expected primary-expression at end of input
         else tree[o].ls0 = tree[o].rs0 = tree%
                                              ^
0_0_33089105_8116.cpp:83:46: error: expected '}' at end of input
0_0_33089105_8116.cpp:83:46: error: expected '}' at end of input