Compilare: user.cpp: In function ‘void init()’: user.cpp:24:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < ones.size(); ++i) ~~^~~~~~~~~~~~~ user.cpp:26:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i < zeros.size(); ++i) ~~^~~~~~~~~~~~~~ user.cpp: In function ‘i64 query(int, int)’: user.cpp:43:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (one_left + msk < ones.size() && ones[one_left + msk] < l) ~~~~~~~~~~~~~~~^~~~~~~~~~~~~ user.cpp:49:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (one_right + msk < ones.size() && ones[one_right + msk] <= r) ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ user.cpp:58:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (zero_left + msk < zeros.size() && zeros[zero_left + msk] < l) ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~ user.cpp:63:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (zero_right + msk < zeros.size() && zeros[zero_right + msk] <= r) ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~ user.cpp:38:95: warning: unused variable ‘split’ [-Wunused-variable] int zero_left, zero_right, one_left, one_right, zeros_right, zeros_left, ones_in, zeros_out, split, st, dr; ^~~~~ user.cpp:39:11: warning: unused variable ‘left_cost’ [-Wunused-variable] i64 ant, left_cost; ^~~~~~~~~