Compilare: user.cpp: In function ‘int main()’: user.cpp:153:56: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << query(left + x - 1, left + y - 1, k) << '\n'; ^ user.cpp:90:51: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] tinsert(Root, values[pos], pos, MaxLvl, where); ^ user.cpp:135:19: note: ‘x’ was declared here int type, x, y, k; ^ user.cpp:153:46: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << query(left + x - 1, left + y - 1, k) << '\n'; ^