Compilare: main.cpp: In function 'int BFS(coord, int, int)': main.cpp:98:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<field, std::allocator<field> >::size_type' {aka 'long unsigned int'} [-Wformat=] 98 | printf("%d", portals.size()); | ~^ ~~~~~~~~~~~~~~ | | | | int std::vector<field, std::allocator<field> >::size_type {aka long unsigned int} | %ld main.cpp:99:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<field, std::allocator<field> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 99 | if((nrp == portals.size()) && (first == false)){ | ~~~~^~~~~~~~~~~~~~~~~ main.cpp:105:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<field, std::allocator<field> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 105 | }else if((nrp == (portals.size() + 1)) && (first == false)){ | ~~~~^~~~~~~~~~~~~~~~~~~~~~~