Compilare: main.cpp: In member function 'int fast_map::get_elem(int, int)': main.cpp:33:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<fast_elem>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | while( i < v[x].size() && ( v[x][i].poz1 != poz1 || v[x][i].poz2 != poz2 ) ){ | ~~^~~~~~~~~~~~~ main.cpp:37:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<fast_elem>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | if( i < v[x].size() ){ | ~~^~~~~~~~~~~~~ main.cpp: In function 'elem read()': main.cpp:71:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 71 | while( i < s.size() ){ | ~~^~~~~~~~~~