Compilare: main.cpp: In function 'void Aint::RunBuild(int, int, int)': main.cpp:150:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < t[nod<<1].size() && j < t[(nod<<1) + 1].size()) { ~~^~~~~~~~~~~~~~~~~~ main.cpp:150:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < t[nod<<1].size() && j < t[(nod<<1) + 1].size()) { ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:156:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < t[nod<<1].size()) ~~^~~~~~~~~~~~~~~~~~ main.cpp:158:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j < t[(nod<<1) + 1].size()) ~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int Aint::RunQuery(int, int, int)': main.cpp:177:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (r + pas < t[nod].size() && t[nod][r + pas] <= qval) ~~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In member function 'char InParser::read_ch()': main.cpp:22:29: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, 4096, fin); ^