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:40:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (one_left + msk < ones.size() && ones[one_left + msk] < l) ~~~~~~~~~~~~~~~^~~~~~~~~~~~~ user.cpp:46:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (one_right + msk < ones.size() && ones[one_right + msk] <= r) ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~ user.cpp:55:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (zero_left + msk < zeros.size() && zeros[zero_left + msk] < l) ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~ user.cpp:60:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (zero_right + msk < zeros.size() && zeros[zero_right + msk] <= r) ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~ user.cpp:73:7: warning: unused variable ‘cost_st’ [-Wunused-variable] i64 cost_st, cost_dr, tmp_cost = left_cost + msk; ^~~~~~~ user.cpp:73:16: warning: unused variable ‘cost_dr’ [-Wunused-variable] i64 cost_st, cost_dr, tmp_cost = left_cost + msk; ^~~~~~~ user.cpp:35:95: 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; ^~~~~