Compilare: main.cpp: In member function 'bool FLUX::bfs(uint64_t, uint64_t)': main.cpp:27:24: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<long unsigned int>, long unsigned int>::value_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 27 | if(t[c]!=-1 || flux[acm][c]==cap[acm][c]) main.cpp:35:21: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<long unsigned int>, long unsigned int>::value_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 35 | return (t[d]!=-1); main.cpp: In member function 'uint64_t FLUX::get_ans(uint64_t, uint64_t)': main.cpp:60:29: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<long unsigned int>, long unsigned int>::value_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 60 | while(t[aux]!=-1) main.cpp:70:29: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<long unsigned int>, long unsigned int>::value_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 70 | while(t[aux]!=-1) main.cpp: At global scope: main.cpp:185:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 185 | main() { | ^~~~