View Compilation Error

0_0_33089246_4355.cpp: In function 'void build_tree(int, int, int)':
0_0_33089246_4355.cpp:85:75: error: expected '}' at end of input
         if(a[l])tree[o].ls1 = tree[o].rs1 = tree[o].ms1 = tree[o].sum1 = 1;
                                                                           ^
0_0_33089246_4355.cpp:85:75: error: expected '}' at end of input