View Compilation Error

0_0_24374970_14372.cpp: In function 'void build(int, int, int)':
0_0_24374970_14372.cpp:38:62: error: 'struct segment_tree' has no member named 'tg'
   t[o].fi=a[l],t[o].se=-inf; t[o].cnt=1; t[o].sum=a[l]; t[o].tg=inf;
                                                              ^